Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!asuvax!hrc!viking!campbellb
From: campbellb@viking.UUCP (Brian Campbell)
Newsgroups: comp.sys.apple
Subject: Mac drives on IIGS
Keywords: Disk drive, Macintosh, IIGS
Message-ID: <45803944.f759@viking.UUCP>
Date: 7 Sep 89 19:49:02 GMT
Organization: gte
Lines: 26

I have an opportunity to buy a used Macintosh disk drive
where I work, with a 30 day maintaince guarentee.
I may be able to buy a 800k model for $100, or a single sided
400K for $50.  These seem like good prices, or at least   
reasonable ones for used equipment.

My question is will either one work on the IIGS?  The 400K
drive is the one I particularly question.  Both models were
purchased during the 1985-1987 time frame.  I understand
that Macintosh peripherals are supposed to be compatible with
IIGS peripherals, but could these older drive models pose
any kind of compatibility problem?  Or can I simply daisy
chain one of these guys in with my 3.5 drive and my 2 5.25
drives.  I understand that it would be inserted before the
5.25 drives in the chain.  In fact, did the older Mac drives
feature forward chaining?  (Case in point: one of my 5.25
drives is a cheap third party drive which does not have a
port for forward chaining.  Hardly matters, since its the 
last drive on the chain.)  Also, would four drives create
a strain on my power supply?  I also have an internal fan,
a parallel card, AST digitizer card, and a fully populated
Apple memory expansion card.  A couple more cards in the
future is not out of the question.

I need a response prior to September 15.  Many thanks to
anyone who responds.