CRC Error when extracting a RAR file...

Discussion in 'Windows Desktop Systems' started by percy, Mar 19, 2005.

  1. percy

    percy OSNN Senior Addict

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    hi. I had noticed that most of the files that I had downloaded that has RAR extension and I am using WinAce to extract it has a CRC error. Is the WinAce that has the problem or the file? Thanks. :(
     
  2. muzikool

    muzikool Act your wage. Political User

    CRC stands for "cyclical redundancy codes." Try this software to figure out what's happening.
     
  3. muzikool

    muzikool Act your wage. Political User

    I found the following information. You might use WinRAR to try what is suggested.

    If you have a RAR (or ACE) archive and receive CRC errors or an "archive damaged"-type message when you attempt to extract it, there may be a possibility of repairing that damaged archive: It needs to be complete (not short any bytes) and it needs to have been created with a recovery record.*To see if it was, click on the "Info" button in WinRAR. If it was created with a recovery record, then you have a chance: highlight the damaged file in the WinRAR (or WinACE) window and click on the first-aid box with the red cross,* the "Repair" icon in WinRAR. In WinACE click on 'Archive', then 'Repair Archive'. In both cases a window will pop up asking you where to put the file the program will create in it's attempt to make a perfect file. Usually you have it put the "repaired" file in the same folder as the rest of the archive.* It might be able to create a perfect file, which you can then rename to take the place of your damaged one, and retry the extraction process.

    If the damaged file has no recovery record, then no repair is possible. If it is short bytes, even if there is a recovery record,* then no repair is possible. There are no third-party products (at this writing) for repairing ACE or RAR files other than the PAR1 or PAR2 systems. WinRAR has it's own parity-archive system if the archive creator used it- this is shown by there being REV files, and if present, WinRAR will use them to repair or replace the damaged files. If not, then there is little hope of repairing the entire archive, but you still might be able to extract individual files from it.
     
  4. percy

    percy OSNN Senior Addict

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    416
    ok. i will try winrar. thanks... tried winrar and when looking at the files info it said that "unknown method" for the files .. :(
     
  5. muzikool

    muzikool Act your wage. Political User

    Are you using WinRAR 3.0 or later? If not, upgrade your version.
     
  6. percy

    percy OSNN Senior Addict

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    416
    i have winRAR 2.8. i am now downloading the upgrade version. ty.
     
  7. jimi_81

    jimi_81 Moderator Political User

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    Location:
    Stoney Creek, ON, Canada
    that should be the problem.
    if the rar was packaged with winrar 3, i believe you need to use winrar 3.x to un rar it.

    thats a lot of rar's in a sentence
     
  8. muzikool

    muzikool Act your wage. Political User

    Right, which is why I was questioning the version. If 3.x doesn't work, then I'm not sure you can extract the file.
     
  9. percy

    percy OSNN Senior Addict

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    416
    i was able to extract the file and install it. thanks again.
     
  10. muzikool

    muzikool Act your wage. Political User

    You're welcome. :)