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From: dgold@apple.UUCP
Newsgroups: comp.sys.mac
Subject: Re: How much space is in an SE's internal 20 Meg SCSI?
Message-ID: <973@apple.UUCP>
Date: Tue, 9-Jun-87 22:50:37 EDT
Article-I.D.: apple.973
Posted: Tue Jun  9 22:50:37 1987
Date-Received: Sat, 13-Jun-87 03:43:05 EDT
References: <148@faron.UUCP> <150@faron.UUCP>
Reply-To: dgold@apple.UUCP (David Goldsmith)
Organization: Apple Computer Inc., Cupertino, USA
Lines: 24

In article <150@faron.UUCP> pc@faron.UUCP (Penny Chase) writes:
>Well, I have a partial answer to my own question.  I got hold of a 
>copy of version 1.1 HD SC Setup, initialized my disk, and ended up with
>19,866K of available space.  So the different amounts of formatted space on
>the SCSI disk (~19,170K for version 1.3 vs. ~19,860K for version 1.1)
>result from using different versions of HD SC Setup.  Now my question is
>what are these versions of Setup doing differently?...

I believe this change was made so that all disks of a given size class (i.e.,
20MB, 40MB, or 80MB) would be initialized to exactly the same amount of
space.  This is so the image backup feature of our cartridge tape drive
could be used to restore to a different disk.  The idea is, that if you
backed up your disk, then it got lunched and replaced, then you tried to
restore your backup, the restore wouldn't work if the new disk was from a
different vendor and so had a slightly different amount of free space.
-- 
David Goldsmith
Apple Computer, Inc.
MacApp Group

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