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From: amos@csri.toronto.EDU (Tak Ariga)
Newsgroups: comp.sys.apple
Subject: Re: Apple 3.5
Message-ID: <8707081522.AA17989@finch.csri.toronto.edu>
Date: Wed, 8-Jul-87 11:22:00 EDT
Article-I.D.: finch.8707081522.AA17989
Posted: Wed Jul  8 11:22:00 1987
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> From: SEWALL@UCONNVM.BITNET
> Subject: Apple 3.5
> Date: 4 Jul 87 20:42:00 GMT
> 
> I get confused by all these 3.5 inch designations (Apple 3.5,
> Unidisk 3.5, etc.) which signify slightly different disks, but
> I've read that the Macintosh 800K drive is identical to --
> wasn't it the Apple 3.5 (whichever one it is that can daisy
> chain on a IIgs I think).
> 
> At least in theory, Apple wants to make all their peripherals
> compatible across lines.  That way if you buy an SCSI hard disk
> for you Apple II and then trade up to a Mac, you won't have to
> buy a new hard disk too (making it easier to cost justify the
> upgrade).

Well, this might be old news, but from what I know, the 3.5 for the
// series can be used on the mac, but the reverse does not hold.

I had a friend who tried this a while back.  He had a unidisk 3.5
800K for the //e he was using, and modified it for use on his
Mac Plus.  I think what you have to do is disable the logic
board inside, which the Mac does not need, but the // requires.
Not surprisingly, the Mac drives does not have this logic board,
so it cannot be used with the //.

At least, that's what he told me...  Does anyone care to correct me?

--Tak