Re: SCSI Harddrive and GS/OS

[spector@vax2.concordia.ca (Mitchell Spector)]

In article dempson@atlantis.actrix.gen.nz (David Empson) writes...
>
>In article <42rpfm$ceu@booch.legent.com>,  <LOE2708@waldo.cup.edu> wrote:
>> 	I recently go a used Apple SC20 hard drive and Apple II REV. C
>> SCSI card for my IIgs.  I formatted the disk as one 20 meg partion
>> using Prodos.  While the drive works fine with Prodos 8 and 16
>> applications (I have Paintworks Gold, Copy II Plus and Appleworks
>> installed), the system does not function at all with any versions of
>> GS/OS.
> 
>I've also had problems under recent versions of GS/OS with an Apple
>Rev C SCSI card and one drive in particular.  It works fine on the
>High-Speed SCSI card, but doesn't finish booting with a Rev C card.

	I've found the Apple Rev C SCSI and the Apple 20SC HD will 
not be recognized _at all_ under System 6.0 and 6.0.1. The solution
was to replace the System 6 SCSI driver files ('SCSI.Manager' and 
'SCSIHD.DRIVER') with the System 5.0.4 versions of the same files.
I would suggest making a backup copy of the System 6 'Installer' disk,
and then replace the files mentioned above (found in /System/Drivers) 
with the files found on the 'System Tools' disk from System 5.0.4,
then use that to install System 6. It will then "see" your hardrive.

	Although this worked for me, it's generally not a good idea to
mix different pieces of old and new System Software. I made an expection
in this situtation however, since the only other alternative was to use
System 5 on hardrive instead. My final solution was to sell that setup 
and replace with it a 1MB RamFAST SCSI Rev D, connected to a Quantum
730MB SCSI-2 drive...quite a contrast! ;-)

>David Empson
>dempson@actrix.gen.nz
>Snail mail: P.O. Box 27-103, Wellington, New Zealand

Mitchell Spector
m_spect@alcor.concordia.ca / spector@vax2.concordia.ca