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Date:      Fri, 7 Jun 1996 13:24:19 -0700 (MST)
From:      Terry Lambert <terry@lambert.org>
To:        zgabor@CoDe.hu (Gabor Zahemszky)
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Hihg Sierra format CD
Message-ID:  <199606072024.NAA03928@phaeton.artisoft.com>
In-Reply-To: <199606071517.PAA03524@CoDe.CoDe.hu> from "Gabor Zahemszky" at Jun 7, 96 03:17:43 pm

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> I've sent a question about an non-mountable CD.  Now with a little DOS
> program, I've found that this CD is in High Sierra format.  Does this 
> format available under FBSD 2.1R?
> (The problem:
> I've FBSD2.1R with a Sony CDU-33A CD-driver on a Vibra-16.  I can use it
> - I've installed with it.  I've got a CD, and looked it under Windows,
> but would like to play the avi/wavc files under FB.  So I mounted it.
> Everything looked fine.  cd /cdrom: </cdrom>: not a directory.  And yes,
> it wasn't a directory, it was a 2048 byte length file - the root dir of
> the CD.  Umount /cdrom: <I don't know what> error.
> umount /dec/scd0c - OK.)
> 
> So the question is: what's the problem with this CD?
> On the CD from Walnut Creek, there is a sentence about FB can handle
> CD's with ISO9660 and RockRidge format.  But as I know, High Sierra was
> the predessedor of ISO.  Wasn't?

High Sierra is supported via the hsfs option (which isn't in the man
page, and may not be communicated to the kernel), according to the
cd9660 source code.

Since CDROM's are invariant (ie: they are ROM's 8-)), this should be
auto-stected (indeed, it is auto-detected, according to the code in
the cd9660_mount() in the FS source code for CDROM FS's).

You should look at the source for details (unfortunately, IMO, the
code needs a rewrite and Jordan is the only one with enough CDROM's
to be able to adequately test ;-)).

I *believe* that tweaking around to *unforce* the Rockridge stuff
will enable auto-detect on mount.  It's been a while since I was
in the code.


					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.



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