Path: utzoo!attcan!uunet!mcsun!hp4nl!fwi.uva.nl!dolf
From: dolf@fwi.uva.nl (Dolf Starreveld)
Newsgroups: comp.sys.mac.programmer
Subject: Re: IIci - Disk incompatibility + possible fix
Message-ID: <267@fwi.uva.nl>
Date: 21 Nov 89 23:37:23 GMT
References: <2845@skivs.UUCP> <1989Nov12.205347.300@csmil.umich.edu> <24289@cup.portal.com>
Sender: news@fwi.uva.nl
Lines: 31

ts@cup.portal.com (Tim W Smith) writes:

> Just a side note: although things are supposed to be case insensitive in
> the IM V format partition map, don't believe it.  For example, HD Setup
> 2.0 will fail to recognize certain A/UX partitions if the type and name
> does not match exactly what HD Setup 2.0 would put there if it created
> the partition.

> I spent all night once trying to figure out why partitions created by my
> formatter would not show up properly in HD Setup 2.0, and then I finally
> noticed that I was not using the same case as they were.   Grrr.

Of course thius does not necessarily mean that the information in the
partition map is case significant. It just means what you say:
HD Setup 2.0 is incompatibel with anything that uses a different case for
the same strings as does HD Setup 2.0.
I would not at all be surprised if this was a bug in HD Setup. Example:
It says in inside Macintosh and in a recent technote that whenever a
partition's type starts with the letters "MACI" (notice the capitals here)
and conforms to some other things not relevant here, the start manager will
calculate and check the partitions cheksum on a IIci and a portable. I have
found out though that if the type contains "Maci" at the start, the checksum
stuff *is* done. This seems to indicate that case is indeed insignificant.

--dolf


Dolf Starreveld  Phone: +31 20 592 5056/+31 20 592 5022, TELEX: 10262 HEF NL
EMAIL:           dolf@fwi.uva.nl (dolf%fwi.uva.nl@hp4nl.nluug.nl)
SNAIL:           Dept. of Math. and Computing Science, University of Amsterdam,
                 Kruislaan 409, NL-1098 SJ  Amsterdam, The Netherlands