*BSD News Article 3420


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From: casper@fwi.uva.nl (Casper H.S. Dik)
Newsgroups: comp.unix.bsd
Subject: Re: 386BSD filesystem types. Can I mount a SunOS 4.1.2 disk?
Message-ID: <1992Aug7.092400.25680@fwi.uva.nl>
Date: 7 Aug 92 09:24:00 GMT
References: <BZS.92Aug3155429@ussr.std.com> <1832@titccy.cc.titech.ac.jp> <1992Aug6.052627.22670@zip.eecs.umich.edu> <7087@skye.ed.ac.uk>
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richard@aiai.ed.ac.uk (Richard Tobin) writes:

>In article <1992Aug6.052627.22670@zip.eecs.umich.edu> gilgalad@sparky.eecs.umich.edu (Ralph Seguin) writes:
>>Hi.  Is the 386BSD filesystem a 4.2 filesystem?  Ie, could I mount
>>a Sun formatted, ... disk?  (Formatted under 4.1.1 or later of SunOS).

>Note that Sun have made some changes to the file system format which
>may mean that your Sun disk is not a 4.2 filesystem.  In particular,
>they introduced something they call "clustering" in 4.1.1.

You cannot exchange 4.2 filesystems bewteen systems that have
a different endianess (the filesystem writes machine formatted numbers).
You can, without much trouble, write a endian converting 4.2
driver. I suppose the magic numbers would make detecting this easy.

Casper
-- 
						|	Casper H.S. Dik
						|	casper@fwi.uva.nl