From: Nate Eldredge <neldredge AT hmc DOT edu>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: [PKZIP + WinZIP] CRC error while decompressing files
Date: Fri, 22 Oct 1999 12:58:36 -0700
Organization: Harvey Mudd College
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Michelle Konzack wrote:
> 
> Hello,
> 
> Curently I have a big problem with my disk space and I was
> compressing my archived mailbox folders (Eudora 16Bit).
> 
> Now while decompressing I have CRC-Erros this mean, the
> decompressed file is smaller as the same file before
> compressing.
> 
> I have the same resultat with some Win- and Dos-EXE's, like
> Calmira II.
> 
> I am using PKZIP/PKUNZIP 2.04g and WinZIP 6.3 SR2
> 
> Please can anyone help me to find a (Un)ZIPer which do not
> kill Bytes ??? Any suggestions ???
> 
> If it work from the command line (Dos) and work in a
> batchfile it is OK.

This could also be due to some sort of generic file corruption problem. 
If the file is corrupted either on disk or in memory, I'd expect to see
a shortened file (a decompressor will typically give up when it
encounters an error and just leave the part that worked.)

I'd suggest making backups and doing some stress-testing of the box. 
gzip may be a good program to test with as it seems to be very
bug-free.  
-- 

Nate Eldredge
neldredge AT hmc DOT edu