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What Data Recovery Tools Do the Pros Use?

Life2Death writes "I've been working with computers for a long time, and every once and a while someone close to me has a drive go belly up on them. I know there are big, expensive recovery houses that specialize in mission-critical data recovery, like if your house blew up and you have millions of files you need or something, but for the local IT group, what do you guys use? Given that most people are on NTFS (Windows XP) by the numbers, what would you use? I found a ton of tools when I googled, and everyone and their brother suggests something else, so I want to know what software 'just works' on most recoveries of bad, but partially working hard drives. Free software always has a warm spot in my heart."

76 of 399 comments (clear)

  1. for fat and ntfs by keeegan · · Score: 5, Informative

    Get Data Back works very well.

    1. Re:for fat and ntfs by darkvad0r · · Score: 5, Informative

      For a free solution, check TestDisk.
      It has saved my data many times.

    2. Re:for fat and ntfs by SputnikPanic · · Score: 2, Informative

      By necessity, I discovered and used this software just last night, and the data recovery process was smoother than I had anticipated. At one point when I was copying the salvaged files to a good drive, Windows took exception with one of the files and started barking one of its usual program-terminating error messages. I was afraid that I'd have to have GetDataBack reread the whole drive and start the whole process all over again, but the program was robust enough to avoid crashing. It just moved on to the next file and kept on going. It's not often that I pay for software but this was $80 well spent.

    3. Re:for fat and ntfs by pushf+popf · · Score: 4, Interesting

      I've been doing consulting and software development for around 30 years, and when I was young and dumb, thought I could fix anything. Now I know better and have found that in this situation, the phrase "Wow, that's too bad. Where are your backups?" works nicely.

      While there are all sorts of voodoo, data scraping bit-remunging apps available, at the point before you do anything you have no liability. After you "recover" the data, you're on the hook for everything forever.

      All you need is for the customer to come back 2 years later and tell you they were sued into the dirt because something they were required to disclose was missing or incorrect and you'll wish you never took the job.

      And even if they don't sue, there will be a never-ending stream of phone calls about broken documents, files they can't find and all sorts of other "un-tidyness".

      And even if they don't call, there will be eternal uncertainty about the quality of the recovered data. Are their financials correct? What was that number that had the letters nearby really supposed to be?

      My favorite drive recovery method is now BackupPC. You set it up, configure it for an appropriate number of incremental backups each day and let it fly. When a drive craps out, replace it, click the appropriate checkbox on the "Restore" page and press the "go" button. No doubt, no lawsuits, no untidyness.

      Do-it-yourself Data Recovery is great if you like to putter with things and have lots of time and no liability (employees generally can't be sued by their employer) however when actual money is at stake, it's better to just send the drive out and let someone who is actually equipped and staffed to do the recovery handle the work.

      To put things in a different perspective, how happy would you be if the county tried to sell your house for unpaid taxes because billy-bob "who's really good with computers" did their drive recovery and your tax payments were on one of the bad spots?

    4. Re:for fat and ntfs by TheLinuxSRC · · Score: 4, Informative

      I could not agree more. Just last week I had a designer friend who accidentally deleted the partition his portfolio was on. We tried to recover the partition however the MFT had become lost/corrupted.

      My first attempt to recover his data was with ntfsundelete, however it did not recognize the partition at all. I next used Disk Internals NTFS Recovery program (Commercial) with the same results.

      Finally, I Googled a bit and found the testdisk/photorec package and used that. It took about 40 hours to recover ~225GB data. It was unable to recover filenames, however it did create new directories for each directory it found and recreated the files in those directories, albeit with arbitrary names. Most impressively it did recreate the files with the proper file name extensions. With some creative perl scripting I could have even renamed some of these files based on meta data in the files. This was not necessary in my case.

    5. Re:for fat and ntfs by Anpheus · · Score: 3, Insightful

      Tell them that you don't have a full copy of all their data. Tell them to tell their lawyers that a hard drive failing is equivalent to a small fire occurring in the secretary's desk and while you, the fireman or handy guy with the fire extinguisher can recover a lot of data, there's no way to be certain that it's all the data.

      People like you are a lot of what's wrong with the world. You cover your ass so much that you don't accomplish what your clients really want or need.

    6. Re:for fat and ntfs by pushf+popf · · Score: 4, Insightful

      People like you are a lot of what's wrong with the world. You cover your ass so much that you don't accomplish what your clients really want or need.

      Do you know what's worse than "No Data"?

      Bad Data.

      What my clients really need is data they can trust.

      Telling someone "Here's your data, I got some of it back for you, but I'm not sure how much you lost or if the stuff I got back for you is correct" is great for your mother's vacation pictures. It's not great for your bank, insurance company, doctor, school or anybody else that needs to have verifiable, correct data.

    7. Re:for fat and ntfs by Zoromo · · Score: 4, Insightful

      No question with TestDisk as an excellent open source/free recovery option.

      It was the only thing I found (freeware or pay) that relatively easily restored a couple of NTFS logical partitions--and all data--after they were destroyed by an older version (8.0) of Diskeeper's "boot optimization" defragging. The last time I used Diskeeper or recommended it. I continue to use and recommend TestDisk. The author of TestDisk was also responsive to emails when I encountered a unique issue with the drives I ended up needing help with.

      Note that TestDisk is only for recovering lost partitions and making non-bootable partitions bootable again. For those functions, there is no better program out there.

      Its sister program included in its download--PhotoRec--can do file recovery. Its designed mainly for recovery of photos off all media, but it supports many different file formats. So the TestDisk/PhotoRec package may be all you need.

      Other freeware/non-open source file recovery alternatives that are reliable and work well:

      --PC INSPECTOR File Recovery. 100% free & full featured, many options. Been using it for years.

      --Recuva. 100% free, by Piriform, the maker of the very popular CCleaner/Crap Cleaner system cleaner.

      Somewhat less elegant than the above one. But the only freeware option I've studied that can do a "deep scan" of your drives for lost files. Which can take hours, but may turn up more missing data than the other non-PhotoRec options here.

      --EASEUS Deleted File Recovery. A more limited version of their $70 "EASEUS Data Recovery Wizard", but very well designed for basic file recovery.

      There are other freeware file recovery options I've studied, but they are all more limited than the above. Would recommend TestDisk (for partitions) and PhotoRec (for files) first, then the other three (for files) in the order given.

      In all honesty, shelling out for a payware solution is very unlikely to "find" more deleted files on a NTFS partition than the above freeware solutions, unless you have special needs they don't cover. Which is rare. And again, there is nothing better than TestDisk--free or payware--for recovering partitions.

  2. Ordinary Kitchen Stuff by Mikkeles · · Score: 5, Funny

    Lemon juice and heat!

    --
    Great minds think alike; fools seldom differ.
  3. I tell the tools by Anonymous Coward · · Score: 5, Insightful

    That they should have backed up.

    1. Re:I tell the tools by Big+Hairy+Ian · · Score: 3, Insightful

      Agreed Although the number of times I've been called in when the back up was cocked because nobody knew what they were doing make me think this is a little harsh. Good lesson here kids just because the tape was in overnight doesn't mean there's anything useful on it.

      --

      Build a Man a Fire, and He'll Be Warm for a Day. Set a Man on Fire, and He'll Be Warm for the Rest of His Life.

    2. Re:I tell the tools by AmberBlackCat · · Score: 2, Insightful

      I think, when someone replies to a question about data recovery, and the only thing in the reply is "you should have backed up your data", the person who replied should be modded as some kind of hypertroll. If it were combined with a useful answer, it would be okay. But by itself, it's an absolutely useless reply for the person asking the question.

  4. GetDataBack by sean_nestor · · Score: 5, Informative

    GetDataBack has worked perfectly for me many times. Very easy interface, works on deleted files as well as formatted disks (provided the data you want to recover hasn't been overwritten, of course). Worth the $79, IMO.

  5. Well by ledow · · Score: 4, Informative

    ddrescue

    But to be honest, if you've hit that point for an "enthusiast" user, then you're already on your last legs. If you ain't got a backup, forget it - the chances of getting one particular file you've lost might be good, the chances of recovering any significant amounts and being able to verify their integrity are bad.

    Plus, with SSD's, flash, memory cards, etc. the chances of being able to recover *anything* from a faulty drive without professional equipment are fast approaching zero. Most USB Flash drives just "die" when they hit their write limits, rather than fail gracefully into read-only mode.

    1. Re:Well by bonehead · · Score: 5, Informative

      Here's one that's saved my butt several times.

      Often times when a drive fails it's not the physical mechanism that goes bad, it's something on the circuit board. If you can find an identical drive (should be pretty easy in a corporate environment, could be tricky for a home user), just carefully remove the board from the good drive and install it on the bad one. You'd be surprised how many times that "totally dead" hard drive will start working like new.

      The software solutions are great for some situations, but they can't do anything if the drive isn't even visible to them.

    2. Re:Well by bonehead · · Score: 2, Interesting

      When did this start? I had to do this at home not to long ago to save some data from a relatively recent 500GB drive. That worked out fine.

      I'm not doubting you, just curious.

  6. None! by Anonymous Coward · · Score: 2, Informative

    Real professionals never lose their data.

    1. Re:None! by Anonymous Coward · · Score: 3, Insightful

      Real professionals backup their data.

    2. Re:None! by tiggertaebo · · Score: 2, Insightful

      I'm kinda hoping your trying to be amusing here, if you are though its gone under my humour radar today (and I apologise if I seem like an arse)

      Yes most "professionals" will have backups of their data (which is what I presume you are alluding to) however it's not always the case that those backups will be literally up to the minute, and sometimes its just less hassle to recover any lost "recent" data then it is to just cycle to the last backup and deal with the shortfall. Also its not exactly uncommon for "professionals" to be asked to help recover data for NON-professionals.

    3. Re:None! by BrokenHalo · · Score: 2, Insightful

      I'm not sure why the moderators decided the parent posts were flamebait: at worst, by not recommending some product, they might be considered off-topic.

      But the simple fact is that the surest way to keep your data is to back it up, back it up more than once, and to VERIFY your backups. Of course that doesn't help if we're having to salvage someone else's fuckup, but at least you can say "Everybody told you so".

  7. I Like Knoppix with a Good BIOS by eldavojohn · · Score: 5, Interesting

    I'm not a pro in this department although I've saved a lot of partial data from hard drives for some friends (I'll be very interested in these comments).

    I use a live CD of Knoppix which has really good system repair and troubleshooting. I also have another important tool which is an old Dell Intel motherboard that allows me to set the rotational speed of the drive. Example: my friend's laptop is giving him the click of death so I pop out the IDE drive and hook it up to a 2.5" to 3.5" connector and plug it into the motherboard with a working 1TB 3.5" slaved. On boot up, I hit the BIOS and set the speed as low as it can go or low enough like 1,000 RPM. Then I boot into Knoppix live CD and check to see if I can mount the file system. Knoppix seems to be able to mount a lot of partitions that other more stringent flavors of Linux don't. Sometimes it clicks from the get go and there's nothing you can do. But if it doesn't, then I set a script up to copy their most valuable directories first onto the working 1TB drive. I let it run all night or weekend and check the drive periodically for heat problems. People are surprised what you can save for them doing this ... the downside is sometimes I'm surprised in what I save for people--p0rn is not worth my time.

    --
    My work here is dung.
    1. Re:I Like Knoppix with a Good BIOS by ctrl-alt-canc · · Score: 2, Informative

      Knoppix is used here as well, and it can help you to save your data in many situations. One suggestion: not every network card is supported by the standard knoppix distributions, so either you burn a custom knoppix CD tailored for your system, or you keep a disk at hand with the appropriate drivers.

  8. R-Studio by CodyRazor · · Score: 5, Informative

    Back when most data recovery and disk utility applications didnt work on vista (and many still dont) I found one called r-studio. It managed to recover a whole lot of data of a damaged flaky 5TB Raid 5 array, which is pretty impressive considering it was the only application at the time that could even recognize it as a drive, all the others just call it a damaged volume.

    As far as I know its still the only one that can do Raids, at least as far as I can find. It also allows many customization options of searches and donest over simplify things too much. It takes forever but it finds any potential damaged file systems and then lets you use whichever one you like to recover whichever files you like. It can also be used to recover deleted files.

    As far as I recall its pretty cheap, at least compared to a few out there and worth a try. But with all recovery and security software, I find the information and their website extremely generalized and vague about what exactly you can do, so I always download the software first to make sure it can do what I want, which 90% of the time it cant, and then if it works I buy it. Its not the most legal practice but if they dont offer demos and wont be specific about what their software does its the only practical solution.

    --
    So Skulldilocks threw acid on the schoolchildrens' faces, cause somebody from the bible told her to do it!
  9. Knoppix with a Drive Adaptor by Push+Latency · · Score: 3, Interesting

    For your health!

  10. My .02 by NES+HQ · · Score: 2, Interesting
    Not to be a smartass, but...

    For the folks (family and friends) that seem to think I'm a free computer repair store I told them to go buy a cheap USB hard drive and just set up a quick and dirty batch file to back things up nightly (or weekly, depending on how big their files are).

    I've told them to do this or there's a good chance that I won't be able to recover their files if their PC crashes. This is an easy solution, cheap, and requires virtually no end-user interaction. That last bit is especially important since I've found that they typically ignore even the easiest backup procedures (e.g. copy C:\My Documents to D:\).

    As for the original question, I still do attempt file recovery for the stubborn ones who ignore my backup advice. I've had moderate success with various pieces of software. Just Googled "hard disk recovery software." Interestingly enough, different programs have recovered different data on the same HDDs...

    1. Re:My .02 by Glonoinha · · Score: 4, Funny

      Bah - learn to make house calls to fix computers. It gets you laid (as in : having sex with a real woman.)

      The trick is, pay attention to the computer for a while (ignoring the woman.) Then set it off doing something that's going to take a half hour or so (defragging the hard drive or backing up to an external) and explain - well, that's going to take an hour ... what can we do that will keep me busy while that thing works? Then the clothes start flying off.

      Hey, it could happen!

      --
      Glonoinha the MebiByte Slayer
    2. Re:My .02 by tinkerghost · · Score: 3, Informative

      Sad thing is, before I even got to your post I was envisioning this exact scenario and was considering starting a business on the side doing house calls.

      Even sadder, is I do this for a living - onsite, in home repair & installation - and the reality is they just whine about having to pay you for watching the progress bar. Pickup & dropoff involves so much less whining.

    3. Re:My .02 by bonehead · · Score: 2, Interesting

      I used to do the in-home thing on the side several years back. Even at $100 an hour for regular home users, I had enough business going that I could almost have quit my day job.

      But, you're right. Home users whine way, way too much. They also have no concept of "business hours". They don't think twice about calling you at 10:00 pm to ask why some website won't load. They also seem to honestly and truly believe that their blown power supply is your fault because you installed Office on their computer 6 weeks ago ("Well OF COURSE I expect you to fix it for free! You broke my computer you son of a bitch!").

      In the end, I decided that while the money was pretty decent, my sanity was more valuable.

  11. Freeware does the job. by L4t3r4lu5 · · Score: 2, Informative

    Work your way through this list. Unless you're a corporate entity with a large purse, it's probably going to be a freeware app they use too (unless they have a suite which covers many types of media and file systems). They make money from companies, not end users.

    Further Info: I phoned a Tamworth, UK-based company (Google it if you're bothered) regarding recovering a file from a USB drive for a teacher where I tech. They asked what I did so far to recover the file, I said I'd run some freeware recovery tool. They told me that's all they'd do, as they don't make money spending any more than about 5 minutes on it. If that can't find it, and you don't have hundreds / thousands of pounds to spend on engineer time, it's the best you'll get.

    --
    Finally had enough. Come see us over at https://soylentnews.org/
    1. Re:Freeware does the job. by L4t3r4lu5 · · Score: 2, Informative
      Hate to reply to my own comment, but some pointers;
      • Clone disks before you work on them.
      • Never work on the original disk
      • Never boot the original disk. Swapping can overwrite data which has been deleted permenantly.
      • "Deep" scans are a nightmare. Often the names are not restored, you get block-by-block groups of sectors instead of contiguous files, and converting them to any useable data structure is why these recovery firms can charge through the nose.
      --
      Finally had enough. Come see us over at https://soylentnews.org/
  12. Pros avoid having to use data recovery tools. by argent · · Score: 4, Informative

    Pros make sure they have good backups. Pros tell their users "nothing on your laptop/desktop is backed up", make that corporate policy, and respond to virus infestations by re-imaging the victim's computers to make sure that everyone's too damn scared of Mordac the Preventer to keep anything on local storage.

    1. Re:Pros avoid having to use data recovery tools. by jumpingfred · · Score: 5, Funny

      No the pro install nightly backup tools on the laptops. At least they do on mine.The backup software then uses heuristic algorithms to start the backups when the laptop is being used for meeting presentations in front of many people.

    2. Re:Pros avoid having to use data recovery tools. by TheLink · · Score: 2, Funny

      I think you're confusing BoFH with Pros.

      --
    3. Re:Pros avoid having to use data recovery tools. by argent · · Score: 2, Insightful

      That works just fine until a computer illiterate employee didn't back up their files, spent weeks making a file, the HD gives the click of death and your boss says how he read about recovering data from a broken HD and if you can't do it he can "find someone else".

      Been there, done that, got quotes from vendors, got approval from the CFO, hand-carried the disk over to the top data recovery house in Houston, and they failed to get the files back,

      Professionals don't fight battles they can only lose, and always have a plan B.

  13. dd by locofungus · · Score: 5, Informative

    dd if=/dev/sdb of=dump.img bs=512 conv=noerror,sync iflag=direct

    Once a drive has started failing the first thing you want to do is get as good a copy of everything as you can manage. If it's a physical problem, especially if it's a damaged platter, then it tends to get worse as the drive is used. Get everything off and then work on the copy.

    Tim.

    --
    God said, "div D = rho, div B = 0, curl E = -@B/@t, curl H = J + @D/@t," and there was light.
    1. Re:dd by greed · · Score: 3, Interesting

      On the other hand, if it's a thermal problem, you may have to rescue in "chunks". I had a disk go that could only be used for about 10 minutes before it got too warm and shut down.

      On the third hand, you may have something that looks like physical damage, but when you wipe the disk with zeros to confirm the fault and get ready for RMA-time, it all magically comes back. That's a sign you got corrupted data on the disk that the ECC couldn't deal with. (And probably that you've got a drive with questionable firmware, and is reporting the wrong kind of error: Fujitsu, I'm looking at you. Especially for not recording anything in the SMART counters.)

    2. Re:dd by Kiaser+Zohsay · · Score: 2, Interesting

      ddresuce (or dd_rescue) is a better choice here, because instead it will write zeros in place of read errors, so that successfully read block later on are in the right place. You can also set it to retry error block multiple times, and record progress to a log file so you can resume the retries at a later time.

      --
      I am not your blowing wind, I am the lightning.
  14. TRK - dd/dd_rescue/ddrescue, Restorer by millisa · · Score: 5, Informative

    My favorite tools are a combination of the Trinity Rescue Kit linux boot cd and the Restorer tool.

    It depends on the type of failure, but generally, I start with a ddrescue to get an image of the drive, especially if the drive is running bad sectors. Either I set the image to go to a secondary spare drive or I push it across the network. ddrescue is nice in that it doesn't bail when it hits those bad sectors, can run in reverse mode, and eventually it'll get as much as isn't corrupt on the drive into the image.

    After establishing the image, the original failed drives go into ESD bags and aren't touched again unless they are to get shipped to one of the expensive clean room type places for their style recovery.

    Most of the win32 drive recovery softwares out there can handle reading from an image file, so from here on out, I work with the images I took with ddrescue. Restorer has worked pretty well for me on getting things back from hard drives, CF cards, and even raid sets (figuring out the cluster sizes on the raid can be a pain if you don't happen to know them, but the software does support reassembling raid drives from the images you take of the single drives).

    Most of the win32 packages out there have support for making the original images, but I haven't had as much luck with most of them when dealing with severely corrupted drives or with a large scattering of bad sectors. Either they take far too long to make it through the image or they end up failing to get by the bad sectors.

    Regardless of what you end up picking, you don't want to use any of the recovery tools that advertise how they can fix the partition table and such on the drive, live . . . any recovery operation that thinks it is ok to 'fix' a drive with data on it you want to recover has the wrong mindset. The data is important, not making the drive work again.

  15. EASEUS Disk Copy by dinkdinkdink · · Score: 2, Informative

    I have had success with the *free* EASEUS Disk Copy boot CD - http://www.easeus.com/download.htm [easeus.com]. It will perform a bit for bit copy from the defective drive to a new organ-doner drive. I believe you have the option to continue the copy, even on erroneous sectors. On a recent drive in the early stages of failing, I was able to recover the entire disk after I did the bit-for-bit copy and then performed a error check/fix on boot-up. The standard Windows XP error check tool corrected all of the previously mangled bits.

  16. its the mechanical failures by circletimessquare · · Score: 2

    that keep the expensive guys in business

    if all data loss were just a matter of awesome software, then wonderful. but frequently you are dealing with mechanical failures like the write head crashing onto the platters, death of the controller, failing motor, etc.

    no software is going to fix these things. then its to the $100/hr guys in the clean room

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
  17. Spinrite works miracles by stenchcow · · Score: 4, Informative

    Spinrite has worked miracles in the past for me. It's brought back unbootable corrupted windows partitions back to life for me. Supposedly it also fixes physical defects in hard drives as well. It boots off of a image from disc. It costs $89.00 but it's saved my butt in the past.

    1. Re:Spinrite works miracles by Glonoinha · · Score: 3, Informative

      I was using Spinright back in the 90's - it was awesome then, but I wasn't aware they are still around.

      I endorse the package from the 90s and if it is the same guys I'm tempted to endorse them today.

      --
      Glonoinha the MebiByte Slayer
    2. Re:Spinrite works miracles by NetRanger · · Score: 4, Informative

      Same here. At $89, SpinRite is a bit on the pricey side, but I have recovered data from hard drives that I thought I had zero chance of saving. I figure since it saved hundreds of dollars in labor -- several times -- it was worth every penny. Especially in those circumstances where your highly paid datacenter techs thought it was a great idea to construct a RAID 5 from all identical hard drives from the exact same manufacturer lot. Sucks when two of those drives experience the exact same fault within a few minutes of each other. Fortunately I was able to whip out SpinRite and save the day, because otherwise we were looking at days and days of restoring from incremental backup tapes.

      It's an ancient-looking DOS command-line utility, but I definitely give props to Steve Gibson for keeping SpinRite up to date to where it works on modern hard drives. $89 versus days and days of overtime pay for IT guys -- it certainly made me look pretty good come performance review time.

      --
      -- We live in a world where lemonade is artificial and soap has real lemon.
    3. Re:Spinrite works miracles by Anonymous Coward · · Score: 2, Interesting

      I'll chip in with a thing or two about SpinRite.

      Firstly, I have used it and agree that it's very good and does what it says. It takes advantage of at least some degree of knowledge of the mechanical properties of the actual physical disk, along with extremely low-level access (such as cleverly detecting the temperature of the disk on modern BIOSes and optionally waiting for it to cool down before continuing). Steve obviously knows what he's doing, and it's too bad that all of the technical documentation is written in market-ese; there's clearly a good knowledge of science and technology behind the product, but I can't follow much of it because the explanations of the principles of operation are virtually nonsensical. Obviously his strategy, but a shame for the rest of us (and possibly counter-productive - I almost dismissed it without a giving it a chance on account of its documentation, and only tried it in the end because I've used other programs by Steve that are exactly what he says they are).

      But I'll also add that it works by making modifications to the data on disk. As has been said many times here, it's a very good idea to make an image before you let this program loose. Honestly, if this program can't save it, then I don't know how much luck you'll have on the image, but it's a good habit to be in anyway. And besides, you should try working on the image first and only using SpinRite as a last resort. It's good, but if the disk is faulty then it's probably not going to be fast.

    4. Re:Spinrite works miracles by Jane+Q.+Public · · Score: 3, Informative

      SpinRite is no more capable of causing a head crash than Microsoft Excel is. If the heads crashed, they crashed. Don't blame SpinRite for it. That's like blaming a coolant failure for destroying your engine, when it fact it overheated because you ran out of oil.

  18. One time I used Me by TinBromide · · Score: 2, Informative

    I had a drive where the file system was shredded, so I loaded the drive into FTK Imager (its free, about halway down the page), did a search of the raw space of the drive for the file name I needed, found the relevant $i30 reference (its in there), jumped to the relevant sectors on the disk using ftk imager's goto command , carved out the hex with ftk imager's copy hex command, dumped it into a hex editor, and saved the file under the extension. It worked perfectly.

    Uphill, both ways, in the snow.

    This is the ultimate last resort if you absolutely, have to, get a file back.

    --
    Is it sad that I am more likely to recognize you and your posts by your sig than your name or UID?
  19. Yep, I agree by meosborne · · Score: 2, Insightful

    I agree with you 100%. I've done this many times, myself.

  20. SpinRite by powerbooklinux · · Score: 3, Interesting

    Does the job when all hope is lost. I've used it many times for myself and clients. $89.00 and worth every penny. http://spinrite.info/

  21. Depends by Sycraft-fu · · Score: 2, Informative

    We usually start off with a bootable XP CD. Often there isn't anything really that messed up, and you can read the data that way with no problems. There are a couple of free programs, the names of which I can't remember off the top of my head, that do a fine job for "undeleting" files.

    If it won't read in that, the next step is usually Knoppix. You can tell it to force mount a bad partition. Now that is a mixed blessing since sometimes the data you'll get is garbled which is why you try something else first. However, barring any serious problems, it'll usually mount and read.

    If both of those have problems, the next set it the tools from the drive manufacturer to check for physical problems. You set those to do a full scan. At this point, there are three possible results:

    1) It runs to completion, no errors. Means the physical disk is fine, it is all a logical data problem. Now go back to bootable Windows and run a checkdisk. Reason we didn't do this earlier is the moving of data checkdisk does can screw things up worse if there are physical problems.

    2) It runs to completion, errors found and corrected. Back to Windows or if that doesn't work Knoppix to try and read the disk again. Usually it'll read, checkdisk it if not.

    3) It errors out and gives a a diagnostic code meaning serious, unrecoverable errors. We are now at another juncture:

    a) The data is really important. At this point, time to send it off to a specialist. Gillware.com is who I like. Pack it up and mail it off, you probably get your data back along with a bill for $300.

    b) The data isn't critical, but we'd like to recover it. Run what I call "the magic disk destroyer." It's a program called Spinrite. It is a VERY aggressive recovery program. Because of that it is either going to get the disk readable, or fuck it up so bad nobody will be able to. Hence my nick name for it. Put the disk somewhere that you can have a fan blow on it, fire up Spinrite, and let it go for a day or two. See what happens.

  22. A collection of small apps... by xtracto · · Score: 2, Informative

    I agree with others about GetDataBack... it indeed is a good app.

    Sometimes however, people have come to me with a hard drive with a FOUND.000 directory full (sometimes about 10GB) of CHK files... for that I recommend:

    http://www.ericphelps.com/uncheck/

    It is free and does a good job recognizing the supported files

    Also, it is worth getting something like mplayer or VLC and try to manually open the biggest CHK files to see if they are some kind of media file.

    Additionally, a Hex editor like xvi32 can be helpful to give a fast glance at the header of the file and see what is it... maybe reading the folder with a Linux distribution (which gets the description of the file based on the content rather than the extension) could also help... but for other more obscure things, a hex editor is good (of course you need to be familiar with several headers... yay I feel 1337!)

    --
    Ubuntu is an African word meaning 'I can't configure Debian'
  23. Re:Cannot beat RAID by DigiShaman · · Score: 3, Informative

    I agree, these days every home PC should be setup for RAID1 (RAID5 for workstations). However, RAID should *never* be a substitute for making backups to external media.

    --
    Life is not for the lazy.
  24. Pros before Hos... by DarthVain · · Score: 5, Insightful

    If your a Pro you back up all your important data anyway, so it is a moot point. Likely you even have some remote back up. There are services out there. Use Google, it ain't hard. In a pinch you can just email yourself some attachments in Gmail. Not good for media files or anything large, but if you want to save some key documents or your tax returns etc... Privacy may be an issue, but if your really prickly about that, then just encrypt it (though make sure you can decrypt easily later).

    If it is a friend or family member who has just lost everything: Look very superior, point at them, remind them they should have backed up, and how stupid it is not to do so, then laugh at them for a while. Once your eyes clear of tears, repeat. After 4 or 5 times maybe it might sink in, and you will have done them a great service. Send them a bill in the mail.

    Harsh I know, but come on, this has been cannon for years, get with the program.

    Honestly though most people's computers are totally full of crap. There are some things like Personal files, Photos, and the like that are irreplaceable, but most stuff is just media you can replace, or software you can replace, etc... and if it is important to you, then back it up for god sakes.

    Seriously, if you save their data you are just re-enforcing and rewarding bad behavior.

    1. Re:Pros before Hos... by TheSpoom · · Score: 2, Informative

      Wow, you're an asshole.

      Maybe you should just do what you can for your family and then remind them that they should backup with their new drive. You know, as opposed to reinforcing the stereotype that all computer geeks are antisocial bastards that don't care about a person's feelings at all.

      --
      It's better to vote for what you want and not get it than to vote for what you don't want and get it.
      - E. Debs
  25. simple.. but not free. by Piffer76 · · Score: 2, Informative

    In the past I've used SpinRite to check the disk for errors, and it's been a life saver twice. But in the case where there's nothing wrong with the physical drive, which is probably the case most of the time, I've had great success with R-Studio. My 2 cents. -P

  26. Re:Cannot beat RAID by beodd · · Score: 2, Interesting

    I agree, RAID is not perfect but as for restoring data from a failed drive via some sort of recovery software will be useless in the case of multiple failures.
    I work on large SAN/NAS arrays and there is never any full proof way of getting data back. Even if the OS is backed up to tape there is always the chance that the parity will fail, exc.. Most raid controllers are capable of detecting existing RAID configurations so replacing a card should no be that big of a deal. I will give you that it is never full proof and I have even seen data loss on a raid from swapping controllers.
    The most awesome safest configuration I have ever seen was a SAN with dual channel drives connected to dull array controllers in a MESH SAN network. The SAN hardware is capable of dynamic RAID 50 with global hot spares. Then on top of all that the entire configuration was mirrored off-site via dark fibre then weekly full backups and daily incremental backups. Oh, and each workstation was connected to the MESH with 4 fibre controllers. There was no single point of failure in this configuration. Was a honor to work on that array.

  27. Re:Cannot beat RAID by beodd · · Score: 2, Interesting

    Oh, I forgot, It also had scheduled snapshots on the LUN so it could be recovered to any point at any time.. Was such a beautiful thing..

  28. Ontrack EasyRecovery Professional by Killall+-9+Bash · · Score: 2, Informative

    Ontrack EasyRecovery is the best software I've used. It WILL NOT WORK under Vista, so hopefully you'll have 2k or xp installed somewhere.

    The software, last time I checked, is no longer suported or updated. Ontrack now seems to specialize in data recovery, not data recovery software. I'm sure however you can find the software.... somewhere....

    --
    "Prediction: within 10 years, Windows will be a Linux distribution." Me, 7-6-2016
  29. Crashed drive with a virtualbox image by ThomasDePaine · · Score: 2, Interesting

    Last week I crashed drive with a virtualbox image on it. The nature of the crash was a ground loop spike while programming a microcontroller board. This spike blew a big capacitor on the board, fried tracks, wiped out 1 of 2 usb controllers on my laptop and zapped my second hard drive. By murphy's law I had just cleared off the one hard drive that was the recent backup for this vdi file and now I'm left with a two year old backup (after looking through about 50 dvds and 6 old hard drives). I bought an equivalent hard drive on Ebay and swapped out the electronics to no effect. Seeing that people swapped out the heads I tried it but all I get is major clicking. Opening up the drive I see a faint mark where the head was trying to traverse the top of top platter (there are two platters). I'm pretty sure that the spindle motor isn't fried. How screwed am I?

  30. Circuitboard Repair or Replacement often necessary by TunaPhish · · Score: 3, Informative

    As far as software goes, a combination of dd / ddrescue / strings / fdisk / grep / mount / and the r-studio suite from r-tt.com are what I use. Though, most of the time the drive is physically damaged, and it's not always inside.

    For example, last week I had a laptop come in with no power to the drive. I examined the board with my eyes and my Fluke Multimeter and discovered that the power +5V on pins 41 and 42 wasn't reaching very far into the board and was basically disconnected at the first component. It looked to be a power-protection diode which had blown due to a surge. I was able to bypass it with a dot of solder, and once reassembled the hard drive powered on, I copied the data off. When the customer decided he didn't want to pay, well, I removed that solder dot before returning his drive to him without his data...

    On 3.5" hard drives you'll often see a rectifier diode serving the same purpose, so when you run into a drive that doesn't spin up, check that out first. It's a small black component connecting the power to ground, and it shouldn't be passing electricity (but it will when it fails, so just pop it off to get your drive working again).

    Other times a clicking drive can be fixed by just swapping out the board with an identical one from another drive. Sometimes, similar model number boards will work as well, but not often. It's a lot of fun trial and error. On the plus side, if the drive is totally fubar'd but still spins up, you can pop it open and do some hard drive spin art!

  31. A mix of tools... by tlhIngan · · Score: 2, Informative

    If the disk is good, but the OS hosed, try a Vista install DVD. Boot it into recovery mode, and one of the options is "copy files". (Honestly, the recovery tools included with Vista are a good first step). It'll copy the files to a USB hard disk.

    If not, then it's time to boot Knoppix (which can mount NTFS just fine, thanks to ntfs-3g). If the disk is dying, but still good, use something like ddrescue to make an image (ddrescue uses dd to clone the disk, but it'll first do the good parts (fast), then try harder and harder on the parts the disk has problems with - this way you'll get the good parts of the disk off quickly and it can concentrate on the bad parts).

    If you lost your partitions, gpart wourks great at seeking and finding 'em. One of my coworkers had just that problem and gpart managed to recover the partition table...

  32. Repair a clone of a clone by seawall · · Score: 4, Insightful
    Assuming the disk works at all: Work on a clone, not the original.

    If you are working on a 2nd generation clone you can afford to take risks in restoring the filesystem. "Oh it that didn't work, fire up another clone and try something else".

    ddrescue (and other damaged disk oriented cloners) lets you work on a copy (or in my preference: a copy of a copy). This preserves the original disk if it has to go to a specialist lab later.

    SpinRite has also saved my bacon more than once but that's something run on the original drive: not done lightly.

    (Warning: dd_rescue is not Gnu ddrescue and Debian Linuxes rename dd_rescue to ddrescue. dd_rescue is a similar but not identical).

    Finally: I need to add Windows NTFS rescue (built in) impressed me last time I needed it. It trundled for many hours but at the end, I had a mostly intact copy of a filesystem on my 2nd generation cloned drive. The original disk had been a mess.

    1. Re:Repair a clone of a clone by HaloZero · · Score: 2, Informative

      SpinRite works to identify bad sectors on a track on magnetic media. Once it locates a bad sector, it attempts to re-read (repeatedly) the bitmap from that sector. If successful, it will re-write that bitmap to an unused sector, mark the original sector as bad, and provide a pointer in the index of the drive to the newly created sector.

      For me, SpinRite has successfully corrected fubared Windows installations (STOP error at boot, unreadable boot volume, registry .xxx missing at boot time, etc), repairing a disk with a FileVaulted sparseimage (allowing it to mount), repairing a disk that was TrueCrypted (allowing it to mount), as well as repairing a drive enough to the point where I can make an image copy of it and recover atleast some (and in some cases, most) of the data on it.

      SpinRite is also the only tool I'm comfortable running on an encrypted volume.

      It's not voodoo, and I run it quarterly for maintenance purposes.

      --
      Informatus Technologicus
  33. if Linux doesn't work by kimvette · · Score: 2, Interesting

    if the tools you can get for Linux don't work, check out R-Studio.

    If you come across a product called "Stellar Phoenix" RUN AWAY. They are the shittiest company in existence. A few years ago I needed a tool and the demo of Stellar Phoenix seemed it would work (it lists the files it said it could recover) so we purchased it only to find that it could not recover them. Come to find out that while they claim support for ALL of NTFS's features, their software WOULD NOT recover files compressed using NTFS compression. This was despite their claims of NTFS5.1 support. They refused to issue a refund and it was a months-long battle so we finally complained to Amex to try to get a chargeback against them but we tried to work it out directly with stellarinfo for too long, so it was too late. They (stellarinfo) claim a 30-day money-back guarantee but DO NOT HONOR IT - or at least they didn't back then.

    We then tried R-Studio, and their trial software listed files it could recover - AND it could recover 64KB chunks to prove it. So for some files I needed immediately I used the trial to decompress and reassemble the files (in 64KB chunks, and then catted them together), and for the rest when we received the key for the full version. We were able to recover every single file. I've used R-studio for clients since then and it has worked every single time, providing the drive will enumerate.

    If the drive will not enumerate you have two possibilities: freezing it in CO2 (I have had success with that), or finding another of the same model drive with the same firmware and swap PCBs, and hope that the problem is with the controller and not the drive itself.

    Why was there no backup? Believe me I asked the same question. :)

    Summary:

    free Linux tools - good
    R-Studio - Awesome
    stellar phoenix from stellar info - snake oil from a shitty company comprised of douchebags

    --
    The Christian Right is Neither (Christian nor right). See: Matthew 23, Matthew 25, Ezekiel 16:48-50
  34. If you can't find a board to swap by Namlak · · Score: 2, Informative

    Try putting the bad drive in the fridge for about 15 minutes. Sometimes it's a thermal expansion problem on the board or in a chip and you can get a few working minutes with the drive to copy files off. If that doesn't work, try the freezer. If that doesn't work, try some gentle heat with a hair dryer. If none of that works, you're back to the board swap or a professional recovery service. If the fridge/freezer thing works, using a USB interface on the drive will buy you some more up time, as you don't waste "cool" time while the machine boots up before you start pulling files off.

    1. Re:If you can't find a board to swap by WindowSux · · Score: 2, Insightful

      Try putting the bad drive in the fridge for about 15 minutes. Sometimes it's a thermal expansion problem on the board or in a chip and you can get a few working minutes with the drive to copy files off. If that doesn't work, try the freezer. If that doesn't work, try some gentle heat with a hair dryer. If none of that works, you're back to the board swap or a professional recovery service. If the fridge/freezer thing works, using a USB interface on the drive will buy you some more up time, as you don't waste "cool" time while the machine boots up before you start pulling files off.

      I agree about the freezer suggestion but you left out one VERY IMPORTANT precaution! The cold metal being re-exposed to a warmer environment with higher humidity when removed from the freezer will result in condensation on all external AND internal surfaces! The best way to do this safely is to put your internal drive into an external HD enclosure, connect the USB and power cord, then double bag it and tape the ends. You have to make the bag air tight but leave your cables hanging out. This way the drive is cooled with a fixed amount of air (and thus water particulate) surrounding it. As it cools a very small amount of moisture will be locked in the bag but not enough to be of concern. When it is removed from the freezer, this small amount of moisture is all it can/will be exposed to and further moisture from the surrounding air will be isolated. Once the drive has stabilized to ambient temperature it can be safely removed.

  35. Freeze the drive, seriously... by DomNF15 · · Score: 2, Interesting

    We recently had an NTFS drive on one of our Dell servers go partially bad. Windows wouldn't boot or read it. I had limited success using various Linux Live distros along with tools like PhotoRec (http://www.cgsecurity.org/wiki/PhotoRec) since the drive was part of a Windows logical raid array. Don't be fooled by the website, the tool works for all kinds of files, not just photos, on various file system types. In the end, someone I work with suggested putting the drive in a ziplock bag and freezing it for a few hours. The rest of us were skeptical, but were also at our wit's end trying to recover the files from this drive, so we tried it. Amazingly, we were able to boot the drive normally and recover the needed files before it got back up to normal operating temperature and failed again.

  36. Re:XFS by lcoughey · · Score: 2, Informative

    XFS? Try UFS Explorer.

    As an official Data Recovery Professional, most of the over the counter tools work well in various situations. But, most require a stable hard drive with minimal sector damage.

    - The first step in data recovery is to stabilize the drive. (leave this to the pros...and we DON'T use freezers)
    - The next step is to do a sector level mirror. We use very expensive hardware for this step. DD will work, but if the drive has a lot of media damage, it may be still worth getting a professional to do the job before the problem gets worse.
    - The next step is to deal with the file system and recovery. This is where your software tools come in. Again, we use very expensive programs for this step, but we also play with some of the programs mentioned above.

    When I talk to IT professionals about using our services, they have a preconceived idea that data recovery always costs thousands of dollars. This is usually because the IT professional does everything they can think of (freezer, open the drive, tap with a hammer) to recover the data before passing the job over to the data recovery lab. As a result, the data recovery labs tend to charge more because of the added problems caused by the previous attempts. My company does not charge more because of what was done, but we have had to give clients bad news because the data is unrecoverable because of what was done.

    In short, if the data is valuable, don't use the freezer or programs like SpinRite; rather, get a free quote by a data recovery professional. If the price is too high, get a second opinion. If the second opinion is too high, then you have nothing to lose.

  37. Re:Software by miggyb · · Score: 2, Interesting

    I agree. Trinity Rescue Kit is all you need if you're getting your mother's vacations pictures from a hard drive that isn't fully dead yet. That and a fridge

    --
    This signature serves no purpose other than to help you see which posts were made by me.
  38. Re:For a free solution, check by Mister+Whirly · · Score: 3, Insightful

    In cases like this, when you are bringing your system in to have someone work on a specific component (not the hard drive), I find it is hand to have a small "I don't care about this" drive that you can slap an OS on, then remove and set aside. Then if you ever need a repair, put it back and remove the one with your actual data on it. (Or once I knew someone that had 2 drives in their system - 1 for the OS and 1 for data. I suggested he remove the data one before bringing it in. And of course, they reformatted the one with the OS on it, even though he had requested doing nothing with the hard drive.) After having almost the exact same thing happen to a friend of mine a few years ago, that is what I did for his system, and what i recommend to anyone going to have the systems worked on by "geniuses" or "geeks".

    --
    "But this one goes to 11!"
  39. Recuva + good controller by AmiMoJo · · Score: 2, Informative

    Recuva (http://www.recuva.com/) is free and works pretty well. It has a handy preview feature too, although it doesn't always work.

    To be honest, there isn't really much beyond what Recuva can do. Some paid-for tools support scanning for a few more file types in situations where the filesystem is gone and you have to scan the whole disk, but unless you happen to have files in some unusual format then there is no real advantage.

    The one thing which does make a big difference is the drive controller. Some chipsets are a lot better than others at dealing with knackered disks. You need one which does not lock up for long periods or try to read bad sectors too many times, otherwise your scan will take days or weeks with no improvement in the amount of data recovered. ATI chipsets seem to be best.

    --
    const int one = 65536; (Silvermoon, Texture.cs)
    SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
  40. Knowledge and experience comes first by Lawand · · Score: 2, Insightful

    Due to the variety of types of errors and possible causes of data loss, I find that -throughout the recovery process- the more options you set by yourself (requiring knowledge and experience in hard drives and file systems) the more efficient the process is. So, no matter the tool you choose, try to provide as much info to the tool as possible, and don't rely on the software developer(s) to choose a best general case which will always work...

    --
    Your Ad here
  41. List of data recovery tools by Aryeh+Goretsky · · Score: 2, Informative

    Hello,

    Here is a list of data recovery programs I have put together. Some of them may be a little old, for floppies or optical media only, but should still be useful. Unless otherwise noted, they are all for Microsoft Windows.

    A-FF Labs - NTFS Undelete and Partition Find and Mount
    Access Data - FTK Imager
    Acronis - RecoveryExpert
    Advanced NTFS Recovery - NTFS Recovery (may handle FAT32 as well)
    bitMART - Restorer Ultimate
    Brant, Dmitry - DiskDigger
    BriggSoft - Directory Snoop
    CGSecurity - TeskDisk and PhotoRec
    Convar - PC Inspector File Recovery
    Digital Assembly - Adroit Photo Recovery (pictures only)
    DiskInternals - NTFS Recovery
    DIY Data Recovery - iRecover
    DTI Data - Recover It All
    DataRescue.Com - PhotoRescue (intended for flash RAM cards, which are typically formatted with FAT, may work with other devices as well)
    EASEUS - Data Recovery & Security Suite
    Fsys Software - DFSee
    Gibson Research Corp. - Spinrite
    Gillware - GillWare File Viewer
    Higher Ground Software - Hard Drive Mechanic Gold
    Kato, Brian - Restoration (also here)
    LC Technology -
    [Continued in next message, as for some reason, Slashdot would not let me post in its entirety (too many URLs?). AG]

    --
    Dexter is a good dog.
  42. Mac OS X options (also: the freezer trick) by kriegsman · · Score: 2, Informative
    For an Mac OS X volume (HFS, HFS+), I've had lots of luck with Data Rescue II ($99) for recovering from serious drive failures. For drives that are still operational but have become borked at the filesystem level, Disk Warrior does a great job of rebuilding a healthy new directory structure. I make it a point to always have a copy of Disk Warrior within 100 yards of my PowerBook.

    Also, a couple of times I've had dying drives that work OK for a few minutes after a cold boot, and then they (heat up and) die. I've had good luck throwing the drive in the freezer (in a ziplock bag) for a day, then powering up it, recovering as much as I can until the drive chokes again, lather, rinse, repeat, until all recoverable data has been copies off to a good drive.

  43. Re:For a free solution, check by MrKaos · · Score: 2, Informative

    I specifically told them not to format the user drive but the tech reformatted it anyway.

    *idiots*, the only way to be sure is to remove the drive, but I guess it was part of the warranty deal.

    I have a Linux PC with two drives formated with ReiserFS,

    Good filesystem to recover from, I have successfully recovered data from a drive formatted over ReiserFS. For all his quirks, it's a great filesystem. What did they format over it, NTFS I'm guessing?

    I had more than 500GB on it so I've been looking for something to unformat it and recover the data.

    1. get a bigger drive say 1TB. 2. dd the raw image of the target drive onto the new drive *do not attempt data recovery off the original disk*, all data recovery is conducted from the dd image. 3. Do you have the original partition information, this can be handy as if you can get these original figure you can use some of the Reiser tools to restore the journal and recover the data, if you are lucky you will then be able to use fsck which will start to restore the files to Lost+Found as unconnected inodes. You may even be able to mount the image as a loopfs and copy the files off directly. 4. if you can't use 3, you will need to use a tool (magic rescue comes to mind) to recover files from the drive image based on file types in sweeps. I have successfully recovered data from trashed drives this way. Fortunately for you you picked reiserFS which is more forgiving that other filesystems. You have lost data, but I rate you chances as pretty high even if some dolt has formatted right over your file systems. It takes a lot of time to do the recoveries so I usually set them up to run in batches over night.

    Good Luck!!!!!

    --
    My ism, it's full of beliefs.
  44. Re:Make the repair shops pay for loss of data by robbak · · Score: 2, Informative

    You would never get a technician to sign it.

    I certainly would not, even though I do not reformat hard drives while there are any other alternatives. (I don't think I ever have, apart from when the customer walks in and says "reformat this for me.")

    Hard disk drives dying on the operating table, or power supplies failing and zapping the drive controllers, are just too common for me to take liability for the data.

    --
    Prediction for end of Universe #42: Fencepost error in Quantum_bogosort.cpp
  45. Re:Make the repair shops pay for loss of data by Mister+Whirly · · Score: 3, Informative

    When I repair a computer, I set the terms, not the customer. I would never agree to pay for an inflated damage cost, ever. As a matter of fact, I tell them flat out I am not responsible for any data loss that would occur. Not that I have ever lost anyone's data, but if I did I want it clear i am not liable for any monetary loss they would suffer. If their data is THAT important, they have multiple backups, right?

    --
    "But this one goes to 11!"