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The Thirteen Greatest Error Messages of All Time

Technologizer writes "They add insult to injury — and computing wouldn't be the same without 'em. So I rounded up a baker's dozen of the most important error messages in computing history — from Does Not Compute to Abort, Retry, Fail to the Sad Mac to the big kahuna of them all — the mighty Blue Screen of Death. And just in case my judgment is off, I include a poll to let the rest of the world vote for the greatest error message of all." I can't believe that "I'm sorry Dave, I'm afraid I can't do that" didn't make the list.

95 of 623 comments (clear)

  1. and the fourteenth error should be... by houbou · · Score: 5, Funny

    Error, Windows Vista detected on Drive C: prepare to acknowledge, confirm and reboot.

    1. Re:and the fourteenth error should be... by doti · · Score: 5, Funny

      Who is General Failure, and why is he reading my hard drive?

      --
      factor 966971: 966971
    2. Re:and the fourteenth error should be... by gnick · · Score: 4, Informative

      That's probably why TFS questions "I'm sorry, Dave, I'm afraid I can't do that" being left out.

      Curiosly, though, TFA does say (on page 3 of 5):

      I chose to limit myself to one fictional error message in this list, but I could go on: If I ever produce a sequel to this story, I guarantee you that "I'm sorry, Dave, I'm afraid I can't do that" will be on it.

      Perhaps Technologizer got tired of clicking through TFA before reaching #5.

      --
      He's getting rather old, but he's a good mouse.
    3. Re:and the fourteenth error should be... by Ryogo · · Score: 4, Funny

      Error: Keyboard not found. Press F1 to continue.

    4. Re:and the fourteenth error should be... by Imagix · · Score: 3

      Everybody keeps complaining abut this one... but it is rather good: it tells you the error, and verifies that you've fixed it before continuing.

    5. Re:and the fourteenth error should be... by Anonymous Coward · · Score: 3, Funny

      He's Major Malfunction's boss, looking for Private Pictures.

  2. The Daily WTF by mini_razor · · Score: 5, Informative

    www.thedailywtf.com has a great selection of error messages. Some are absolute genius!

    1. Re:The Daily WTF by Emperor+Zombie · · Score: 4, Funny

      Some are absolute genius!

      You just missed a perfect opportunity to say they were brillant.

      --
      I'm so excited I just made water in my pantaloons!
  3. go away. by thhamm · · Score: 5, Funny

    missing /etc/passwd, tried to login as root:
    "you don't exist. go away."

  4. Where's the keyboard error? by Kentaree · · Score: 5, Insightful

    Surely "Keyboard Error: Press Any Key To Continue" should have been in there somewhere?

    1. Re:Where's the keyboard error? by Javi0084 · · Score: 3, Funny

      I just got "Keyboard not found, press F1 to continue" today.

    2. Re:Where's the keyboard error? by overtly_demure · · Score: 5, Insightful

      To my mind, this is by far the best error message of all time. It is succinct, specific, easy to understand, and utterly absurd, all at the same time.

  5. Missing Option by dintech · · Score: 5, Insightful

    Username or password invalid. It's probably got the most face time...

  6. Kernel Panic!!! by WED+Fan · · Score: 5, Funny

    Kernel Panic? Why not just teach that damned kernel some self-defense lessons. Or, at least tell it to grow a set of balls. Just stop the damned Panic.

    --
    Politics is the art of looking for trouble, finding it everywhere, diagnosing it incorrectly and applying the wrong fix.
    1. Re:Kernel Panic!!! by nbert · · Score: 5, Funny

      cd /usr/src/linux && egrep -ir "( fuck)|( shit)" *

      Technically most are not error messages, but they are quite interesting.

      One I'm missing in the list is "Too many colors". Some very old windows programs refused to work when gfx was set to more than 256 colors.

    2. Re:Kernel Panic!!! by wanderingknight · · Score: 3, Funny

      It's not an error message, but I clearly remember the rather strange comment "Fuck me gently with a chainsaw..." buried along the kernel source files.

    3. Re:Kernel Panic!!! by Malevolyn · · Score: 5, Funny

      Actually, I've had "ERROR: No error" before. I'm going to have to say that's much more frustrating, especially when it prevents the program from continuing.

      --
      Your ad here.
    4. Re:Kernel Panic!!! by EGSonikku · · Score: 3, Informative

      Awesome, if you really didn't know it is a reference to the 80's cult hit movie "Heathers":

      http://www.imdb.com/title/tt0097493/

      --
      - "Scientia non habet inimicum nisp ignorantem"
    5. Re:Kernel Panic!!! by bishiraver · · Score: 3, Interesting

      And I've had "ERROR: Too many errors!"

      Was a compile-time error generated by Borland Turbo C++ 3.0 if you had too many syntax errors. Ah, high school...

    6. Re:Kernel Panic!!! by Anonymous Coward · · Score: 3, Funny

      Excel used to have an error that read "Error: Not Enough" and the dialog box had only an "Ok" button. Very entertaining and annoying all at the same time.

    7. Re:Kernel Panic!!! by Rei · · Score: 3, Funny

      My favorites that I've gotten:

      "This wizard will complete the installation of:

          AQP AA002! P O a @ P @1 Ae IoD'i"

      And:

      "You don't exist. Go away."

      --
      You don't exist. Go away.
    8. Re:Kernel Panic!!! by Daniel+Dvorkin · · Score: 5, Funny

      It's not Panic's fault. He's only following the orders of General Protection Fault.

      --
      The correlation between ignorance of statistics and using "correlation is not causation" as an argument is close to 1.
    9. Re:Kernel Panic!!! by Almahtar · · Score: 4, Funny

      Yep. That one's pretty bad, but I've also seen "Error: SUCCESS". I was baffled.

    10. Re:Kernel Panic!!! by h4rm0ny · · Score: 3, Funny


      The most poignant error message I ever recieved was on a HP-UNIX platform which gave me the sad, childhood-crushing line:
      "There is no magic."

      So sad...

      --

      Aide-toi, le Ciel t'aidera - Jeanne D'Arc.
    11. Re:Kernel Panic!!! by Annymouse+Cowherd · · Score: 5, Funny

      My favorite:
      Keyboard not found. Press F1 to continue, Del to enter Setup.

    12. Re:Kernel Panic!!! by FatdogHaiku · · Score: 5, Funny

      I always like the windows "Unexpected Error", it made me feel like someone is sitting around thinking "Well, we expected errors, but... THIS!?!?

      --
      You have the right to remain sentient. If you give up the right to remain sentient, you will be elected to public office
    13. Re:Kernel Panic!!! by OakDragon · · Score: 3, Informative

      That reminded me of the almost Zen-like TRS-80 Level 1 error messages:

      • WHAT? - Indicated that a Syntax Error had occurred.
      • HOW? - Indicated that the running program had performed an illegal function, such as dividing by 0.
      • SORRY - The running program had used up all available memory.
    14. Re:Kernel Panic!!! by TheSpoom · · Score: 3, Interesting
      --
      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
    15. Re:Kernel Panic!!! by sean4u · · Score: 5, Funny

      My first admin responsibility was an AT&T 3B2 400, running SYSVR4. The bad days always had a slightly comical edge to them. Who couldn't feel sorry for a console that said only:

      KERNEL: DOUBLE PANIC
      The kernel panicked while trying to panic

      I couldn't find that on Google just now. Damn kids and their hardened systems.

  7. Your site is padded with ads. Continue? by Anonymous Coward · · Score: 5, Funny

    Somehow, spreading an article across many, many ad-ridden pages is not considered an error.

    1. Re:Your site is padded with ads. Continue? by ThinkTwicePostOnce · · Score: 5, Interesting

      I'll bet you'll like the Re-Pagination firefox extension. When you get to the bottom of the first
      page, do a right click on the "2" or the word "next" in that list of pages. Then you just scroll
      down and see all the pages without clicking on anything more. The extension fetches the pages and
      appends them to the bottom. I consider it "jerking the reader around" when sites have lists like that,
      and thwarting them always provides a nice feeling of satisfaction and triumph!

      --
      Hide all sigs: Click HELP+Prefs (top), VIEWING (last on right), DISABLE SIGS (3rd on left) and SAVE (hidden at bottom).
  8. Commodore 64... by Norwell+Bob · · Score: 5, Insightful

    SYNTAX ERROR

    That's all I ever got out of one when I'd play around with them at Sears back in the day. :^)

  9. The error no one wishes to hear. by houbou · · Score: 4, Funny

    Error, Water Detected in Drive C:

    1. Re:The error no one wishes to hear. by Negatyfus · · Score: 5, Informative

      My gods, I remember that little DOS prank, complete with simulated water sounds coming out of the system speaker! That must've been about 20 years ago.

  10. They missed it: by LibertineR · · Score: 5, Funny

    "Congratulations, your Lotus Notes installation is complete."

  11. Divide by cucumber error by reydelamirienda · · Score: 5, Funny

    +++ Divide By Cucumber Error. Please Reinstall Universe And Reboot +++

    1. Re:Divide by cucumber error by LordEd · · Score: 4, Funny

      ++?????++ Out of Cheese Error. Redo From Start.

  12. Hey I got an error trying to access TFA by isBandGeek() · · Score: 3, Funny

    The page cannot be found The page you are looking for might have been removed, had its name changed, or is temporarily unavailable. ___ Please try the following: If you typed the page address in the Address bar, make sure that it is spelled correctly. Open the asdf.com home page, and then look for links to the information you want. Click the Back button to try another link. Click Search to look for information on the Internet. HTTP 404 - File not found Internet Explorer

  13. the BSOD screensaver by gardyloo · · Score: 5, Funny

    I just run the "BSOD" screensaver on my linux machine, with all error messages enabled. I love having people come in, pause, say, "Um... looks like your machine is really screwed up". Then I bump the machine out of screensaver mode, and their jaws drop.

    1. Re:the BSOD screensaver by snspdaarf · · Score: 5, Funny

      We had a guy do that at my office. The boss comes in, sees the BSOD, decides to help out, flips the big red switch on the PC. Hosed the boot sector on the disk.

      --
      Why, without your clothes, you're naked, Miss Dudley!
    2. Re:the BSOD screensaver by clone53421 · · Score: 5, Funny

      That's nothing. I made the "You may be a victim of software counterfeiting" screen my wallpaper.

      --
      Alexander Peter Kristopeit bought his basement from his mommy for one dollar.
  14. Re:Talk about a missed opportunity- Printer on fir by MyLongNickName · · Score: 3, Informative

    It wasn't. It is in the article.

    --
    See my journal for slashdot ID's by year. Mine created in 2005. http://slashdot.org/journal/289875/slashdot-ids-by-year
  15. Sad Mac and Startup Beep by samkass · · Score: 5, Interesting

    The Mac, having 4-channel wave sound from the beginning, went one better than the PC when it came to the startup failure beep. While the PC would beep out some sequence of single notes indicating hardware errors, the Mac would simply play one chord. A successful bootup was a pleasant chime (sometimes heard on Futurama or other shows when something boots up). However, hardware errors not only produced the sad mac, but a discordant anti-chime. For those with good ears, it was sometimes possible to diagnose some errors by the particular musical dissonance. In particular, some familiar with upgrading the Mac Plus became familiar with a chord indicating bad RAM.

    Good times.

    --
    E pluribus unum
    1. Re:Sad Mac and Startup Beep by Altus · · Score: 4, Interesting

      I liked the early powerpc macs that made the sound of a car crash when the failed to boot.

      --

      "In America, first you get the sugar, then you get the power, then you get the women..." -H. Simpson

    2. Re:Sad Mac and Startup Beep by prockcore · · Score: 4, Insightful

      Having obnoxious sound clips attached to every event you can think of was the epitome of the early 90s.

      "Game over man, game over!"

  16. Linux took humor in error messages even farther: by J.+T.+MacLeod · · Score: 3, Funny

    I did the write-in option:
    "Aiee penguin on the SCSI-bus."

    That's the only time I've thrown back my head and laughed when debugging a crash. I can understand how "lp0 on fire" won out for historical significance, though.

  17. A system call that should never fail has failed. by Anonymous Coward · · Score: 4, Interesting

    "A system call that should never fail has failed."

    A customer read that to me over the phone once. I made him confirm the wording twice to make sure.

    Yeah, its a legit error message too - not a malware scare tactic to get a user to click yes, which I had half expected.

    I just like the wording. The fact that you bothered to include this error implies to me that you knew there was a chance that the system call could fail.

    Kevin

  18. A long time ago... by fahrbot-bot · · Score: 4, Funny
    I got something like this from the Csh on a 4.3BSD system. Still makes me laugh:

    Assertion Botched: This can't happen.

    --
    It must have been something you assimilated. . . .
  19. My Favorite by azadrozny · · Score: 5, Funny

    Some time ago I was running a batch job and the system returned the message, "The system is unwilling to process your request." I figured it was tired of running my programs, and wanted to quit for the day.

  20. WebTV Anecdote "The Wrong Error Message" by Burning1 · · Score: 5, Funny

    The following story comes from Andy McFadden:

    The wrong error message

    In the late hours of September 17th, 1996, the day before the WebTV service was scheduled to go online, a group of us (Rick Daley, Lennart LÃvstrand, me (Andy McFadden), probably Arnold de Leon, plus several others I can't remember) had gathered in the operations center in 275 Alma St., Palo Alto. A collection of network operations and service software engineers were hanging around to bear witness to the official launch of WebTV.

    When the fated hour struck, one of the netops folks, Bryce Jasmer, started to go through the registration process with his WebTV box. As with any online service, we figured the good names would go quickly, so it was important to get in and register before The Masses signed up. Besides, there was something nifty about being one of the first people to ever sign up on the "real" service. Until this day, all accounts were "disposable" test accounts.

    A few of us were standing around, watching him type, feeling giddy with anticipation and lack of sleep. He'd entered his name, address, and other personal information, and was typing in his user name. This is the name used as the e-mail address. He typed in "jazz", so his e-mail would be "jazz@webtv.net". When he hit "enter" on the wireless keyboard, we heard the "whoom" sound that meant an error dialog was coming up. All eyes turned to the screen.

    ---

    To understand what happened next, it's important to understand a little something about how the service worked. WebTV was meant to be a family-oriented service, so it was important to screen all user names and other externally visible features for profanity. It's impossible to catch everything, but it's not hard to catch obvious things.

    The user names were compared against a set of regular expressions. Regular expressions allow you to match against a pattern. For example, "fu.*bar" would match against all names starting with "fu" and ending with "bar". With carefully-chosen patterns, you can catch and reject blatant instances while accepting words like "shitake" and "matsushita" that have a profane word embedded within them.

    The same mechanism was also used to prevent users from selecting "forbidden" names, such as "postmaster", "root", "admin", and "help". We had a text file that looked like this:

    admin.*
    User names may not start with "admin".
    postmaster
    You're not the postmaster.
    poop
    That's a bad word.
    weenie
    That's a bad word.

    An entry had two lines. The first was the regular expression to match, the second was the error message that would be displayed to the user. The service code read the file, grabbing two lines at a time, and when a user name was entered it compared the name against every regular expression. An error dialog was displayed for the first one that matched. If nothing matched, the user name was accepted.

    The code that read the file knew how to skip over comments. It did not, however, give any special treatment to blank lines.

    ---

    Someone had made some changes to the file with the profanity expressions, and while doing so had added a single blank line after the end of the "reserved" names and before the start of the profane words. When the code read the filter list, it grabbed the blank line as the regular expression, and the word that followed as the error message. As luck would have it, a blank-line regular expression matched anything.

    It's midnight. We're all a little punchy. Bryce types in a user name, and the box responds with a very simple message (click here to view).

    We start laughing hysterically.

    1. Re:WebTV Anecdote "The Wrong Error Message" by Burning1 · · Score: 3, Informative

      The story is a first person account, directly from the website of the author. I see no references to an urban legend after a quick Google search. If this is an urban legend, you should cite your source.

  21. PC LOAD LETTER by f0dder · · Score: 5, Insightful

    This should of been on the list.

    1. Re:PC LOAD LETTER by Norwell+Bob · · Score: 5, Funny

      PC LOAD LETTER... what the FUCK DOES THAT MEAN?!?!

  22. Re:Talk about a missed opportunity- Printer on fir by nbert · · Score: 5, Insightful

    In similar vein: PC LOAD LETTER

    Btw: Of course they didn't modify this message for countries which don't use the Letter format, making it even more confusing...

  23. And on the flipside: by omarius · · Score: 5, Insightful

    "Few users will like an error message no matter how well it is designed."
          --Roger S. Pressman, _Software Engineering: A Practitioner's Approach_

  24. Why not to trust Wikipedia by russotto · · Score: 3, Informative

    The article cites Wikipedia in claiming that the Sad Mac dates from 1987, not 1984. Nope; it's 1984. Just hit the interrupt button on the programmer's switch and you got a sad mac (000F 000D, if I remember correctly -- 2 groups of 4 hex digits for the 68000-based machines). Of course, that's from personal experience so Wikipedia: No Original Research means I can't correct the erroneous Wikipedia page. And then some idiot bot is wanting to remove the "bomb" image from the wiki article because of copyright issues....

    Someone else removed the 1987 date, but the 1984 date still isn't there.

  25. The most honest Windows error message by AliasMarlowe · · Score: 5, Informative

    "Error: The operation completed successfully"
    I kid you not. This one was repeatable on any windows box whenever Dr.Watson was invoked after a program crashed. It appeared in win 3.0, 3.1, 3.11, 95, 98, NT, 2000 (don't know about win me, xp or vista). Just click the "save as" button for the error log, then click cancel. Then the magic error appeared in its own box:
    "Error: The operation completed successfully"
    Dr.Watson terminated as well, of course.

    --
    Those who can make you believe absurdities can make you commit atrocities. - Voltaire
    1. Re:The most honest Windows error message by Anonymous Coward · · Score: 5, Informative

      That's what you get when you just translate the return value of GetLastError() into a string using the appropriate Winapi function, given that the last command actually was successful.

    2. Re:The most honest Windows error message by amck · · Score: 5, Funny

      Yep. A Slightly better phrasing I've seen, every time our old Windows Exchange 4.0 box came up"

      Warning: An unexpected condition occured:
      Exchange started successfully.

      As explained, its a race condition calling GetLastError().

      --
      Anyone who believes exponential growth can go on forever in a finite world is either a madman or an economist
    3. Re:The most honest Windows error message by Anonymous Coward · · Score: 3, Funny

      "Error: The operation completed successfully"

      I kid you not. This one was repeatable on any windows box whenever Dr.Watson was invoked after a program crashed. It appeared in win 3.0, 3.1, 3.11, 95, 98, NT, 2000 (don't know about win me, xp or vista). Just click the "save as" button for the error log, then click cancel. Then the magic error appeared in its own box:

      "Error: The operation completed successfully"

      Dr.Watson terminated as well, of course.

      I recall using a JOVIAL compiler in the 1980s. My favorite message was:

      COMPILE COMPLETE: NONE OF THE ERRORS WERE DETECTED.

  26. Re:Quite a good read. by gnick · · Score: 5, Insightful

    I've never run into the FailWhale, because I've never tried Twitter. Although I'm confused by TFA's comment:

    If you can explain what the image has to do with a Web 2.0 service buckling under extreme traffic, please let me know.

    8 little birds trying to carry a whale they have tethered seems like a perfectly appropriate image to accompany a server strain error IMO.

    --
    He's getting rather old, but he's a good mouse.
  27. Long long long is too long by getuid() · · Score: 3, Funny

    cat << EOF > foo.c
    long long long foo;
    int main () {}
    EOF

    $ gcc foo.c -o foo
    foo.c:1: error: 'long long long' is too long for GCC

  28. The Mac Programming Works C Compiler... by Dr.+Manhattan · · Score: 5, Funny
    ...had the best error messages.

    "...And the lord said, `lo, there shall only be case or default labels inside a switch statement'"

    "a typedef name was a complete surprise to me at this point in your program"

    "`Volatile' and `Register' are not miscible"

    "This struct already has a perfectly good definition"

    "Symbol table full - fatal heap error; please go buy a RAM upgrade from your local Apple dealer"

    "type in (cast) must be scalar; ANSI 3.3.4; page 39, lines 10-11 (I know you don't care, I'm just trying to annoy you)"

    ...and more.

    --
    PHEM - party like it's 1997-2003!
  29. ed -- the question mark! by morgan_greywolf · · Score: 5, Funny

    $ ed
    help
    ?
    list
    ?
    quit
    ?
    bye
    ?
    die
    ?
    FSCK OFF and DIE you fscking BASTARD!!!
    ?
    ^C

    1. Re:ed -- the question mark! by Eudial · · Score: 5, Funny

      $ ed
      help
      ?
      list
      ?
      quit
      ?
      bye
      ?
      die
      ?
      FSCK OFF and DIE you fscking BASTARD!!!
      ?
      ^C

      Actually, substitute the ?s for loud beeps and strange letters flooding the screen, and you've got vi.

      It's a great idiot proof tool for making. If you don't care about security, but don't want dangerously unsavvy people to get at the guest account or whatever, just start up vi in the console as you leave the computer, and only those that can prove themselves worthy against the mighty dragon that is vi shall pass.

      --
      GAAH! MY PRINTER IS ON FIRE!!! PUT IT OUT! PUT IT OUT!
    2. Re:ed -- the question mark! by clone53421 · · Score: 4, Funny

      Hrumph. That's nothing compared to writing a program that takes 7 1/2 million years to run and then the answer is "42".

      --
      Alexander Peter Kristopeit bought his basement from his mommy for one dollar.
  30. Beware by codepunk · · Score: 4, Interesting

    One day I got a call from engineering that told me they where getting a error in a vb application. When I get
    there to have a look they told me the engineer that wrote the code had unfortunately died the day before at a
    fairly young age of a hear attack. The error showing was, "Beware The Man Behind The Curtain"...talk about creepy..

       

    --


    Got Code?
    1. Re:Beware by Amazing+Quantum+Man · · Score: 4, Interesting

      Back in '84 at UC Santa Cruz, we had to write an 8086 assembler and linker. I was on the linker group, and we decided to create the 8086 BAT-Linker.

      Error messages were a short dialog along the lines of:

      Holy $SOMETHING, Batman! $ERROR_CONDITION occurred!
      Right! Quick, Robin! To the BAT-Debugger!
      But Batman, we don't have a BAT-Debugger!
      Even so, Robin, fatal errors are no excuse for poor traffic safety.
      Gosh, Batman, you're right! I never thought of that!

      --
      Fascism starts when the efficiency of the government becomes more important than the rights of the people.
  31. Reply Hazy, Ask Again by 2short · · Score: 4, Funny

    Back in the DOS days, I once used a hex editor to find the string "Bad Command or Filename" and replace it with "Reply Hazy, Ask Again". That was fun, but when my coworker got that machine in a reshuffle, she was confused. I explained what I had done, but she couldn't get her brain around the idea that that error was just a string of characters on the disk; that it didn't mean anything different. So she kept asking me about it until she got a new machine along with her promotion to head of tech support. Wow, that job sucked.

  32. The message from HAL9000 by treeves · · Score: 4, Insightful
    "I'm sorry Dave, I'm afraid I can't do that" isn't quite an error message. It might be called a bug, since it was an unexpected consequence of HAL's gaining his own volition, although even that is arguable. It may be considered a natural extension of HAL's programming aimed at protecting the mission. But it certainly wasn't a canned response to an internal error.

    2001 is one of my all-time favorite movies.

    --
    ...the future crusty old bastards are already drinking the Kool-Aid.
  33. Unix by Quiet_Desperation · · Score: 3, Insightful

    I think everyone remembers their first segmentation fault or core dump.

  34. too many pages by doti · · Score: 3, Funny

    They missed this one:

    "Too many pages on the article."

    --
    factor 966971: 966971
  35. Re:Talk about a missed opportunity- Printer on fir by uxr · · Score: 5, Funny

    PC LOAD LETTER

    What the fuck does that mean?

  36. Uber Classic Missing Message by Nom+du+Keyboard · · Score: 3, Funny

    I didn't see the most classic: Excuse me, but there's a moth caught in one of my relays.

    --
    "It's the height of ridiculousness to say for those 9 lines you get hundreds of millions."
  37. abort, retry, ignore by syrinx · · Score: 3, Insightful

    They mention Abort, Retry, Fail as somehow more memorable than the original Abort, Retry, Ignore, which I'd disagree with.

    I seem to remember a few times getting all four: Abort, Retry, Ignore, Fail. Ah, DOS.

    --
    Quidquid latine dictum sit, altum sonatur.
  38. Re:A system call that should never fail has failed by element-o.p. · · Score: 5, Insightful

    The fact that you bothered to include this error implies to me that you knew there was a chance that the system call could fail.

    Maybe. Or maybe the programmer was just really anal retentive, like me.

    I don't really consider myself a programmer, but I do write a fair share of CGI scripts. In my scripts, I detaint the user inputs and provide appropriate error codes for user inputs that fail the detaint. The error trapping almost always leads to one (or more) of some finite set of possibilities, but I *always* include a catch-all along the lines of...
    1) Didn't match valid input;
    2) Didn't match expected error #1;
    ...
    n) Didn't match expected error #n;
    n+1) Catch-all (just on the off chance that I failed to account for a possible error).

    For the catch-all case, I include an error message similar to "This error message shouldn't be possible. Please send an e-mail to tell me how you got here."

    --
    MCSE? No, sir...I don't do Windows. Yes, I am an idealist. What's your point?
  39. OS 360 ABEND core dump by peter303 · · Score: 3, Interesting

    Old timers will recognize "360" not as a MSFT game machine but arguably the most financially successful operating system - the IBM mainframe. ABEND is short for "Abnormal end". If had a line printer on your computer you'd get a print of the ENTIRE contents of registers and core memory. From the Program Instruction Address register you figure out which memory instruction you executing and the registers and core memory contents it was operating on. It was straightforward debugging, but tedious. As core memory reached 16K or 64K bytes, many forests worth of printouts were sacrificed in the name of poor programming.

  40. Raytheon RDS 500 by rumblin'rabbit · · Score: 3, Funny
    The Raytheon RDS 500's of the 1970's sometimes gave the following compiler error:

    Eror

    That was it. Nothing else. Couldn't even bother to spell the word properly. It meant that somewhere in your 10,000 cards(!) of Fortran there was an error. Over time I learned what to look for when this happened.

    We were real programmers then. Didn't have these girly compilers that tell you exactly what and where the problem is.

  41. How about.... by ConstantiusChlorus · · Score: 5, Interesting
    "Your password must be at least 18770 characters and cannot repeat any of your previous 30689 passwords."

    See KB276304

    1. Re:How about.... by PhunkySchtuff · · Score: 3, Funny

      Even better, in the linked kb article:
      "Note that the number of required characters changes from 17,145 to 18,770 with the installation of SP1."

  42. "Nobody knows why it's blue..." by dschuetz · · Score: 5, Interesting

    I do. :)

    There was this crazy guy I knew in college, who went to work for Microsoft. We'd drifted apart, though we both still lurk in some private email groups of friends from that timeframe. About 5 years ago, I saw his name in a Newsweek article about some crazy-hip new MS project, calling him "a relative codger" at 33, brought in to rein in the young guns on the project. The official Microsoft web page for the project featured a "meet the team" section, which next to him, included the phrase "Wrote the BSOD."

    I couldn't let that lie, so I wrote him a quick note asking if it was true, was he proud of it, and most importantly, "Why blue?" Here's part of the response:

    I chose white on blue because that was the same color that the firmware on the Mips workstations we had used for their boot selection screen. Plus that was the default for the old character mode SlickEdit code editor that most of the devs used.

    and:

    No, it is not something I am particularly proud of, but once the kids I work with found out about this little skeleton in my closet they never let me forget it.

    (He also avows responsibility for the Win 9x blue screen, "which gets a lot more air time.")

    1. Re:"Nobody knows why it's blue..." by xtracto · · Score: 3, Insightful

      aaah

      and THIS is the value of reading the comments in slashdot.

      Thanks!

      --
      Ubuntu is an African word meaning 'I can't configure Debian'
  43. Lp0: on fire by Sasayaki · · Score: 3, Funny

    I liked "lp0: on fire". I wonder what other things they could extend this too?

    "Dell0: on fire."

    "iPod0: on fire."

    "TheRoof0, TheRoof0, TheRoof0: on fire."

    "Heart2: on fire."

    --
    Check out my sci-fi book "Lacuna" at http://goo.gl/MVxX8
  44. Re:UNIX: Please contact your system administrator by LinuxDon · · Score: 3, Insightful

    Isn't it Windows that's often doing that? Crapping out with the most vague error message you can possibly imagine and ending in: 'Please contact your system administrator'

    Luckily, as a system administrator you have the ability to look right through the computer case and into the RAM modules to see exactly what has gone wrong in this particular case. Otherwise this kind of error message could just blow your day.

  45. TCFA by halcyon1234 · · Score: 4, Informative

    For those who just want the lame list:

    1. Abort, Retry, Fail? (MS-DOS)
    2. Guru Meditation (Commodore Amiga)
    3. The Red Screen of Death (Windows)
    4. Power On Self-Test Beep (PCs)
    5. FailWhale (Twitter)
    6. lp0 on fire (Unix)
    7. Kernel Panic (Unix/Macintosh)
    8. Windows Must Restart Because the Remote Procedure Call (RPC)
    9. Service Terminated Unexpectedly (Windows)
    10. Does Not Compute (Lost in Space, etc.)
    11. The Red Ring of Death (Xbox 360)
    12. Sad Mac (Macintosh)
    13. 404 File Not Found (Web)
    14. The Blue Screen of Death (Windows)

    And in refernce to the summary:

    I chose to limit myself to one fictional error message in this list, but I could go on: If I ever produce a sequel to this story, I guarantee you that "I'm sorry, Dave, I'm afraid I can't do that" will be on it,

  46. Fault Horn by Detritus · · Score: 3, Interesting

    My favorite isn't really a message, but a device. I used to work with some old Univac computers that were originally designed to be installed on Navy ships for an integrated fire-control system (NTDS). Whenever the computer crashed, it would set off the fault horn, at about 150 dB SPL. It was guaranteed to wake up anyone inside the building and give the computer operator a heart attack. It also had a "battle short" switch that disabled all safety features.

    --
    Mea navis aericumbens anguillis abundat
  47. What a rich topic by anorlunda · · Score: 3, Funny

    My favorite ever I found by doing a hex dump of a Tandy computer. I don't think many users saw this message. It said:

    ERROR 0: POWER NOT ON

    My second favorite came from a General Electric time sharing computer. It was:

    EVIL DO LOOP

  48. No BeOS love? by c_forq · · Score: 3, Funny

    Does no one remember the haikus of BeOS?

    --
    Computers allow humans to make mistakes at the fastest speeds known, with the possible exception of tequila and handguns
  49. PS/2 BIOS Screen Glyphography by bradgoodman · · Score: 3, Interesting
    Unfortunately, they were probably too rare and obscure to make it into the list, by the BIOS error screens on the old PS/2's should get some sort of an "honorable mention".

    For those who don't know/remember/weren't born - In IBM's infinite wisdom, I guess they decided to draw pictures in some sort of crappy BIOS low-res graphics to describe the error messages - probibly because anyone dumb enough to buy a PS/2 were to stupid to know how to read.

    For example - I was working as an intern my freshman year of college, and had to set up a bunch of machines (or somehting) including PS/2's.

    Now I mind you, I was actually quite computer litterate - so imagine my surprise when I turned on one system and got a picture which I could only describe as late-20th-century hieroglyphics. It had a person - with horizontal dotted lines coming out of its head, going through a rectangle or square or something - then a bunch of numbers.

    WTF?!

    I probably spent 10 minutes trying my best to decipher. The best I could come up with, was that it wanted me to elevate the monitor to be level with my head - probibly to avoid some sort of repetitive-strain-injury or something.

    Was there some sort of water-leveling device running between the computer and monitor through the VGA cable or something?! How did it know this?! Even I knew this was stupid - but was desparate to try something. No - that wasn't it!

    Eventually, I figured out the message: "Look up this error code in the manual".

    If they just said that, I would have done that! If that hadn't showed anything but an error number, I would have done that!

    ...if of course, I knew where the manual was...

  50. Pikers all of them... by DerekLyons · · Score: 3, Funny

    My favorite error message has probably never been seen by any other Slashdotter...

    I worked on the FCS MK88/2 (Trident-I Backfit fire control) in the Navy - a room sized collection of computers, old fashioned hard drives the size of footlockers, and associated electronics. In normal operation is was medium noisy what with the disk drives clattering, dozen of power supplies humming (including two big 2kw 120VAC to 28VDC converters), the printer occasionally printing a status or system report, and sometimes a switch rolling as the system operated. It also looked somewhat like you'd think a computer looked like if all you had to go on was Hollywood... Though the lights didn't blink (except for one set on the MDF's), there were a couple of hundred indicator lights scattered across the system plus the console had a couple of dozen more usually lit.

    One day, cruising along at [mumble] feet under the North Atlantic, the generator that provided power to the system ate itself... In an instant all that humming stopped and all the lights went dark.

    Except one.

    On the alarm and monitoring portion of the console (powered by a separate supply) one red light came on, the only light lit and the only portion of the whole massive pile of machinery that had power...

    "Input Power Fault".

    Well, duh...

  51. Worse than failure by DragonHawk · · Score: 4, Funny

    Actually, I've had "ERROR: No error" before.

    I've seen the following in the Windows "Event Viewer" logs. (Reproduced from memory, so it's not verbatim, but it's pretty close.)

    The following problem occurred during installation of Microsoft Office 2003:
    Success

    (Apparently, when installing via GPO, MSI sometimes reports an error despite everything being okay. So the message gets logged. It can happen with any package. I just liked the double entendre from when it happened to Office.)

    (BTW, the subject line comes from this essay. If you haven't read it, you should. What's worse than failure? Success. HHOS.)

    --

    dragonhawk@iname.microsoft.com
    I do not like Microsoft. Remove them from my email address.
  52. POST error codes by DragonHawk · · Score: 5, Informative

    To be fair, it should had said "Error: keyboard not found. Connect a keyboard and press F1 to continue." But then, each byte of ROM was expensive once.

    That error message dates back to the early days of the IBM-PC (possibly the first model, although I couldn't swear to that). Every expected possible failure during POST (Power On Self Test) had a corresponding error code and message. They all used the same output routine, which displayed the error code, the error message, and prompted the operator to press [F1] to continue. They simply didn't create a special case for keyboard errors -- it displayed the same way all the others did. There were other errors which left the system effectively inoperable, but still prompted to press F1. The keyboard error was just the most commonly encountered, of course.

    It was error code 301, by the way. :)

    --

    dragonhawk@iname.microsoft.com
    I do not like Microsoft. Remove them from my email address.
  53. IBM-PC keyboard hot swap by DragonHawk · · Score: 4, Informative

    the error pre-dates PS/2 keyboards, and the older keyboards with the larger connectors were hot-swappable

    The IBM-PC and PS/2 keyboard interfaces were not designed to be hot-swappable. However, it tended to work anyway, provided POST completed initialization of the i8042 first. On occasion, though, a cheap clone would have a mobo that fried the keyboard controller if you tried to hot-swap it. Back in those days, new motherboards were *expensive*...

    --

    dragonhawk@iname.microsoft.com
    I do not like Microsoft. Remove them from my email address.
  54. Explaining ARF by DragonHawk · · Score: 4, Informative

    I seem to remember a few times getting all four: Abort, Retry, Ignore, Fail. Ah, DOS.

    Yah. ARF came from the DOS "critical error" handler. Problems that required operator intervention were termed "critical errors", since the system could not proceed without help. When a BIOS or DOS system routine encountered such a problem, they invoked a software interrupt. The theory was that a good program could hook the interrupt and put in a more useful error handler. Obviously, not many programs did so.

    Abort killed the running program or command, and returned you to the DOS prompt. Retry had DOS try again, without returning control to the caller. Ignore meant control was returned to the calling routine, as if nothing had gone wrong. Fail meant control was returned to the running routine, with an error status indication.

    "Fail" might seem like a good idea, but it turns out that a lot of code didn't check the error status, leading to erratic behavior and/or just calling the same routine again.

    There was some rhyme or reason to when which choices were displayed when, but I've long since forgotten it. Some of it might have had something to do with some commands being internal to COMMAND.COM and some being external programs, but the service routines all invoking the same "critical error" software interrupt.

    --

    dragonhawk@iname.microsoft.com
    I do not like Microsoft. Remove them from my email address.
  55. Psychoanalyze me... by refactored · · Score: 5, Funny
    I once wrote an "Eliza" like program in Basic....

    When I spotted a bug in the output I typed...
    list 1000-4000
    and my program responded...
    Really? Why?
    Totally derailed my train of thought.