From: aces@mcode.amdahl.com (Jeffrey D. Smith)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Data Corruption on a Quantum 80m...
Date: 13 Apr 92 15:47:32 GMT
Reply-To: jds30@amail.amdahl.com
Organization: Amdahl Corporation, Sunnyvale Ca.

In article <6532@shodha.enet.dec.com>, kendrix_j@mims.enet.dec.com (John R. Kendrix) writes:
> 
> Hello,
> 
> I have been having problems with my harddrive.  They first came to light when I
> kept having problems unarcing files.  Lotsa corrupt archives...  At first I
> thought that I had a problem with downloading.  Then I tried an experiment.  I
> took a archive on a floppy which I knew to be good, copyied it off to both a
> partition on the Quantum80m and the Seagate48m.  I then tested the archives. 
> The archive on the Seagate tested out 100% ok with Lha, & Lz.  The archive on
> the Quantum failed and aborted.  It tried this some more with different
> archives from floppies...  Each time I got the same result.  Here is my
> configuration.
YES!  That's been happening to several folks, including me.  Soon after
I installed WB 2.04, I sometimes see generic AmigaDOS error 42.  Usually,
after I cold boot, I write to a file and read it back, and it is garbage.
Then the "format" command won't work; it complains vaguely about an
"error" during format.  HT Electronics is stumped, and GVP never heard
of such a problem.

Other symptons are writing data, rebooting, and finding the old data.
Creating new files, and reading back garbage.  Rebooting and the files
are gone.

> 
> Amiga 2000
> GVP series I w/2megs ram and GVP fastrom 4.0
> 80 meg Quantum (1989)
> 48 meg Seagate (1988)
My set up:
Amiga 2000HD
33Mhz GVP '030 Combo board with Series II SCSI 3.0 rom, 4MB 32-bit ram.
Quantum 105S with 2 partitions, 20MB and 80MB.
Microbotics 8-UP! with 4MB 16-bit ram.
Commodore deinterlacer (A2320?) with Commodore 1950 multisync.
GVP Wangtek 150MB internal tape drive.
Multistart II with WB 1.3 and 2.04 ROM installed.
DKB Megachip 2000 (2MB chip ram).
1 internal floppy, DF0:, and 1 external floppy A1010, DF2:.

> 
> To install the hard drives, I used GVP's Fastprep software in AUTOMATIC mode. 
> The drives were repreped a couple of weeks ago when I moved to 2.04 and
> upgraded to fast roms 4.0.  I thought everything was OK until I started
> noticing these Crashes and archive corruption.  I didn't know if the crashes
> were from 2.04 or from corrupted binaries.  
I've reprepped my HD a zillion times in both AUTOMATIC and MANUAL.  It
doesn't make any difference.  The circumvention is to cold boot, format
both partitions, reload from tape.  After that, I can read/write just
fine for that session, but I have to full back-up to tape before power
down or I'll lose my data.

> 
> Since I discovered the problem, I have re-preped and reformated the Quantum
> using the AUTOMATIC mode in GVP's fastprep software twice, I've tried doing
> everything manually twice as well.   I'm still getting data corruption.  Files
> compared with 'compare' show alot of differences...
> 
> HELP!!  What could the problem be??
Some folks suggested CIA (8520).  My 8520 croaked a few days ago, and
it is replaced, but the problem persists.  Other folks suggest that
the power supply could be weak or failing intermittently.

> 
> Please respond by mail since I don't read this group much.  
No, I need to know what's going, too!  Please respond by mail AND
to this group.

I AM DESPERATE TO GET THIS FIXED!  PLEASE HELP!

> 
> Thanks,
Thanks, too!