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From: UD182050@NDSUVM1.BITNET (Mike Aos)
Newsgroups: comp.sys.apple2
Subject: Re: Problem with High Speed SCSI Card
Message-ID: <4304UD182050@NDSUVM1>
Date: 16 Jul 90 21:44:46 GMT
References: <9007161342.AA06400@apple.com>
Organization: North Dakota Higher Education Computer Network, Fargo, ND
Lines: 24
DISCLAIMER: Author bears full responsibility for contents of this article.

I have a Rodime 45M drive stuck in a Chinook CT-30 case that worked just fine
with the Revision C card, but has yet to work with the DMA card.  I've done
everything by-the-book, but it still refuses to work consistantly.  The rest
of my system consists of a TWGS (latest), GS-Ram+ (latest w/2M) and a stereo
card.  Anyway, it refuses to let me make certain partition sizes, but it will
allow me to make a 10.5/32/.5 setup, and that SEEMS to work fine (any other
size and one of the volumes becomes impossible to initialize).  I can verify
the disks from the Finder (and lots of other utilities) and everything is fine
'till I start to write to it.  Then it (mainly the boot volume) develops bad
blocks.  After a little messing around, the whole thing will refuse to
initialize and I'm forced to reformat with Finder (1:1).  I've tried setting
DMA off, and it copies things to the disk better, but I still have some
bad blocks, and pretty soon the partitions deteriorate to the point that they
can no longer be initialized.  I've been trying for about 4 days now, with
seemingly every possible combination.  The drive has been formatted umpteen
times at 1:1, 2:1, with SCSI Utilities, and even a little on a Mac (I don't
know a lot about Mac's, I just tried some PD stuff I found on an FTP site).

If anyone has any insite into this I'd REALLY like to hear from you.  I thought
my problem was the TWGS but I even took it out for a while and never noticed
any improvement.  On the rare occasions I got the DMA card working with a good
partition I got some STUNNING Linear read times.

Mike