SCSI drive troubles

[cxdb14@wsuhub.uc.twsu.edu (RANDY)]

I am trying to get a 52 mb Quantum drive partitioned to work with my IIgs with
high speed SCSI card. I already have a 30 mb Seagate drive hooked up. The
Quantum is connected to the card, and the Seagate to the Quantum. I was able
to get GS/OS to recognize the drive only by formatting the entire drive as an
HFS folume. When I did this, all sorts of mayhem occurred when I tried to put
files on it, such as "generic FST error"s and having the finder lock up or
crash into the monitor. I then tried to partition it with ADU, Chinook SCSI
utilities, and the high speed SCSI card utilities. I kept getting brain dead
partitions, eg with the bit maps located at the end of the volumes, and
not being able to be fixed with a block editor because the write failed. 
The drive's partitions always cause the finder to choke and I get i/o errors
when I catalog under ProDOS. Copying files to them causes the volumes to be
trashed. Each utility's verify function finds no bad blocks on the drive,
and the Seagate drive functions perfectly when chained to the drive. The
guy who sold it says my software can't handle Quantum drives, and I need to
try it on a Mac. I'm starting to think the drive is toast. Any ideas? Kindly
reply rather than following up as I want to get it going ASAP.
--
Randy
cxd14@wsuhub.uc.twsu.edu