Apple IIgs Scsi Woes

[Joe Smith <system@labtop.com>]

Maybe someone would be so kind as to shed some light on this little problem. After recently resurecting my
IIgs I decided to upgrade the old apple Sider 10 MB to something more substantial.ie. a 170 MB Scsi drive.
Here's the problem:

Apple II Scsi card ( original version 1989?)
Quantum LPS 170 MB Scsi HD

Whenever I boot with the drive online it just HANGS on prodos screen. I've tried using the modified scsi
prodos and same thing.. lockup. Do I need to upgrade the bios on the scsi card? Anyone know?
 
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