Rar Recovery

Discussion in 'Mac Apps and Mac App Store' started by ktalebian, May 12, 2008.

  1. ktalebian macrumors regular

    Joined:
    Dec 25, 2007
    #1
    Hi, I downloaded a large file (3GB) in rar format, and when I want to unrar it, it says it is corrupted. Can I repair the file?


    Thanks!
     
  2. operator207 macrumors 6502

    Joined:
    Jul 24, 2007
    #2
    If you have the par files that could have been created based on the file that was rared, then the answer is "most likely yes."

    If there are par files, then you need to look at macpar deluxe.

    If there are not any par files available, then your out of luck. Unless the error is referring to an incomplete download of one of the rar files. Then it is possible to redownload the bad files, and try to unrar it again.
     
  3. ktalebian thread starter macrumors regular

    Joined:
    Dec 25, 2007
    #3
    What's par?
    The files are broken into rar.01 rar.02 and so on ...
     
  4. bartelby macrumors Core

    Joined:
    Jun 16, 2004
  5. operator207 macrumors 6502

    Joined:
    Jul 24, 2007
    #5
    par = parity files.
    http://en.wikipedia.org/wiki/Par
    and
    http://en.wikipedia.org/wiki/Par2

    If you have such a large file, you would normally use a parity program to create par files (par2 is the commonly used version of par files at the moment) so if you have a corrupted file in either the upload, or download, you have some "fixer" files to fix the download so you do not have to redownload files.

    This is commonly used in usenet downloads/uploads.
     
  6. ktalebian thread starter macrumors regular

    Joined:
    Dec 25, 2007
  7. operator207 macrumors 6502

    Joined:
    Jul 24, 2007
    #7
    Yes, that would be a rar archive. Different programs/people make rar archives different ways.

    The bottom line is, you either download the bad files again, or if available, get the par files and run the parity program against them (see wiki links in previous post for software).
     

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