Hello, I think i have seen enought flash failure to tell you what happens, i've created a system using linux for embedded systems with a total of 12000 units, for 5 years, in this time we have changed about 20% of theses flashes.
What happens is not a single event, here it goes.
- The flash just stop working, you can't read, you can't write, you can't do anything
- Some sectors of the flash stop working, it gets corrupted somehow
- The read of some sectors start to show errors like normal hard disks
- When the sectors start to reach 100.000 write cycles, it gets slow to read, and the entire flash starts getting slower and slower
My Solution until now: Make a big partition for the writable data, and turn it into reiserfs, it naturaly cycles the writes on each sector and you will be able to recover some of the data when it crashes
And dont forget to make the software unlink the node before writing to it, then it will be a brand new file each time.
http://www.sbis.org.br/indexframe.html
We have it since last year and in a few years it will be required by every medical system on the country to implement it
it's based on a central server running on the government to store all the data about people.
Hi, I have exactly the same problem, One MacbookPro, One PC, and another Linux.
The fact is, there isnt a portable filesystem, if you are planning on ext2/3, the mac os x driver is unstable like the hell, and will make you loose your data and crash your system, as it happens to mine. Fat and fat32 will work but with small disks only, and NTFS your linux/macos will damage it within time.
I Have a 400 GB Sata external disk and currently using HFS, because its the only one that doesnt corrupt the data from time to time, and you have drivers for windows/linux.
I know it isnt the best choice but if you plan to keep your data, its my advice.
Here we have a nice opensource solution working on a r&d lab, the X-Servers run in every machine, with XDM, at the server side it authenticantes trought XDM and get you into a SSH account running xinit with the display set to the user ip (everything under ipv6). Since there is no local execution, everything runs from the server and when someone wants a local connection (for fast video refresh) it just ask for local access connection, the window manager is a blackbox nicely configured to map every application onyone might want. For internet there is a rdesktop connection to a windows server machine, and from there anyone can access content. It is nice and run well for 20 people, the machine is a dual xeon 2.8 with 4 gb ram and 300 gb harddrive.
Right know i'm building a list of the stuff that is really not working on my vista, and it gets bigger everyday: * Sound, since i've installed AC3 codec * Internet Explorer, god knows when it stopped working, the first thing i've done is install firefox, I think IE detected it and stopped working, it has some personality * Libjpeg in use with Gaim (nothing appers, ok I like gaim in windows, and it worked fine on XP) * Network access to other windows machines * The Bug reporter, that uses some IE functionality * The video's thumbnails freezes Explorer.exe (i've to set it to details on every folder before it loads thumbs) * Microsoft Visio with spell checking (type Andre freezes every time you try) * Emule is writing to a folder that doesn't exists (C:\program files\emule\incoming) but, when i try to open what i've downloaded from emule, it works misterously from the neverland! I still can't find the files. * Unzip anything, it moves the file inside the zip to the outside, and leaves the zip with 0 bytes (nice way to loose your files)
And the list keep growing everyday, total of 2700 bugs send with the automatic bug report, and can't send manual errors because of the great broke bug report.
Actually as a brazilian too, i really believe he was the first, just because 14-bis was a plane, not that thing the wright brothers call a plane, witch acctualy was nothing better then an wing delta, launched with a catapult.
There is some questions about the wright brothers flight:
1- WHY DID THE WRIGHT BROTHERS TRAVEL 500 MILES ONLY TO FLY? WAS IT NOT TO HAVE THE HELP OF THE UP WIND COMING FROM THE DUNES?
2? A PRIZE OF 100.000 DOLLARS WAS OFFERED IN 1904 IN ST. LOUIS EXPOSITION (USA) TO WHO FLEW IN AN AIRPLANE. IF THE WRIGHT BROTHERS COULD FLY IN 1903, WHY THEY DID NOT TRIED TO WIN THE PRIZE?
3 ? IF THE WRIGHT BROTHERS REALLY COULD FLY IN AN AIRPLANE IN 1903, WHY THEY PATENTED A GLIDER IN 1904 IN ENGLAND? (NUMBER OF THE PATENT: 6732)
4 ? WHEN IN PARIS, IN 1907, WHY DID THE WRIGHT BROTHERS NOT PRESENT THEMSELVES TO THE FRENCH AIRCLUB AND TO THE EUROPEAN PRESS?
5 ? WHERE ARE THE PROOFS OF THE WRIGHTS FLIGHTS BEFORE 1908???
Sometime ago i've been looking for a PDA to buy too. First I take a look in all manufacturers, aparently the best ones is Compaq, and Toshiba. Compaq has a lot of expansion, but they are too expensive, and if you want a pcmcia slot, you can't have a compact flash slot, and in almost all features, if you want one, you have to forget other. Toshiba has something better, but they forgot the pcmcia slot (this makes any PDA very cool, just connect and pcmcia IDE adapter and attach a big disk, listen thousands of mp3 in your car and wherever you want), but they attached built in an 802.11b adapter, and a bluetooth, often an compact flash card. The processors in all versions are even better then we need, but with Pocket PC 2002 you can't forget it;) There is just one thing almost all them forget, its comm ports(no PDA has even an USB port without the docking station) and this make all the use of its power restrict to what the manufacturer wants. For me it's seems this tech is so recent and i'll wait for at last one year for buy one.
In fact, the big problem is how to keep your key in secret, we had done it here, by writing the private key in one smart card, and acessing it from terminal, only the user with the PIN of the card, can access it.
but remotely its a problem, there is ways to access smart cards thru network(by using activeX) but you'll need to write your code from scratch since all solutions are not free software
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Hello, I think i have seen enought flash failure to tell you what happens, i've created a system using linux for embedded systems with a total of 12000 units, for 5 years, in this time we have changed about 20% of theses flashes. What happens is not a single event, here it goes. - The flash just stop working, you can't read, you can't write, you can't do anything - Some sectors of the flash stop working, it gets corrupted somehow - The read of some sectors start to show errors like normal hard disks - When the sectors start to reach 100.000 write cycles, it gets slow to read, and the entire flash starts getting slower and slower My Solution until now: Make a big partition for the writable data, and turn it into reiserfs, it naturaly cycles the writes on each sector and you will be able to recover some of the data when it crashes And dont forget to make the software unlink the node before writing to it, then it will be a brand new file each time.
http://www.sbis.org.br/indexframe.html We have it since last year and in a few years it will be required by every medical system on the country to implement it it's based on a central server running on the government to store all the data about people.
Hi, I have exactly the same problem, One MacbookPro, One PC, and another Linux. The fact is, there isnt a portable filesystem, if you are planning on ext2/3, the mac os x driver is unstable like the hell, and will make you loose your data and crash your system, as it happens to mine. Fat and fat32 will work but with small disks only, and NTFS your linux/macos will damage it within time. I Have a 400 GB Sata external disk and currently using HFS, because its the only one that doesnt corrupt the data from time to time, and you have drivers for windows/linux. I know it isnt the best choice but if you plan to keep your data, its my advice.
I think they are wrong! The best chair is always 7!!!
Here we have a nice opensource solution working on a r&d lab, the X-Servers run in every machine, with XDM, at the server side it authenticantes trought XDM and get you into a SSH account running xinit with the display set to the user ip (everything under ipv6). Since there is no local execution, everything runs from the server and when someone wants a local connection (for fast video refresh) it just ask for local access connection, the window manager is a blackbox nicely configured to map every application onyone might want. For internet there is a rdesktop connection to a windows server machine, and from there anyone can access content.
It is nice and run well for 20 people, the machine is a dual xeon 2.8 with 4 gb ram and 300 gb harddrive.
Right know i'm building a list of the stuff that is really not working on my vista, and it gets bigger everyday:
* Sound, since i've installed AC3 codec
* Internet Explorer, god knows when it stopped working, the first thing i've done is install firefox, I think IE detected it and stopped working, it has some personality
* Libjpeg in use with Gaim (nothing appers, ok I like gaim in windows, and it worked fine on XP)
* Network access to other windows machines
* The Bug reporter, that uses some IE functionality
* The video's thumbnails freezes Explorer.exe (i've to set it to details on every folder before it loads thumbs)
* Microsoft Visio with spell checking (type Andre freezes every time you try)
* Emule is writing to a folder that doesn't exists (C:\program files\emule\incoming) but, when i try to open what i've downloaded from emule, it works misterously from the neverland! I still can't find the files.
* Unzip anything, it moves the file inside the zip to the outside, and leaves the zip with 0 bytes (nice way to loose your files)
And the list keep growing everyday, total of 2700 bugs send with the automatic bug report, and can't send manual errors because of the great broke bug report.
My left hand device is my keyboard, or you can type your bash commands with that shit? I dont think so.
Actually as a brazilian too, i really believe he was the first, just because 14-bis was a plane, not that thing the wright brothers call a plane, witch acctualy was nothing better then an wing delta, launched with a catapult. There is some questions about the wright brothers flight: 1- WHY DID THE WRIGHT BROTHERS TRAVEL 500 MILES ONLY TO FLY? WAS IT NOT TO HAVE THE HELP OF THE UP WIND COMING FROM THE DUNES? 2? A PRIZE OF 100.000 DOLLARS WAS OFFERED IN 1904 IN ST. LOUIS EXPOSITION (USA) TO WHO FLEW IN AN AIRPLANE. IF THE WRIGHT BROTHERS COULD FLY IN 1903, WHY THEY DID NOT TRIED TO WIN THE PRIZE? 3 ? IF THE WRIGHT BROTHERS REALLY COULD FLY IN AN AIRPLANE IN 1903, WHY THEY PATENTED A GLIDER IN 1904 IN ENGLAND? (NUMBER OF THE PATENT: 6732) 4 ? WHEN IN PARIS, IN 1907, WHY DID THE WRIGHT BROTHERS NOT PRESENT THEMSELVES TO THE FRENCH AIRCLUB AND TO THE EUROPEAN PRESS? 5 ? WHERE ARE THE PROOFS OF THE WRIGHTS FLIGHTS BEFORE 1908???
Sometime ago i've been looking for a PDA to buy too. First I take a look in all manufacturers, aparently the best ones is Compaq, and Toshiba. ;)
Compaq has a lot of expansion, but they are too expensive, and if you want a pcmcia slot, you can't have a compact flash slot, and in almost all features, if you want one, you have to forget other.
Toshiba has something better, but they forgot the pcmcia slot (this makes any PDA very cool, just connect and pcmcia IDE adapter and attach a big disk, listen thousands of mp3 in your car and wherever you want), but they attached built in an 802.11b adapter, and a bluetooth, often an compact flash card.
The processors in all versions are even better then we need, but with Pocket PC 2002 you can't forget it
There is just one thing almost all them forget, its comm ports(no PDA has even an USB port without the docking station) and this make all the use of its power restrict to what the manufacturer wants.
For me it's seems this tech is so recent and i'll wait for at last one year for buy one.
In fact, the big problem is how to keep your key in secret, we had done it here, by writing the private key in one smart card, and acessing it from terminal, only the user with the PIN of the card, can access it. but remotely its a problem, there is ways to access smart cards thru network(by using activeX) but you'll need to write your code from scratch since all solutions are not free software