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Date:      Tue, 14 Feb 95 10:36:07 MST
From:      terry@cs.weber.edu (Terry Lambert)
To:        Herve.Soulard@inria.fr (Herve Soulard)
Cc:        freebsd-hackers@freefall.cdrom.com
Subject:   Re: Disklabel
Message-ID:  <9502141736.AA20845@cs.weber.edu>
In-Reply-To: <199502141100.MAA11703@simplet.inria.fr> from "Herve Soulard" at Feb 14, 95 12:00:04 pm

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> Before explaining my problem I should describe what I want to do.
> 
> At home I'm running FreeBSD-2.0. At work I'm working on DEC-Alphas
> with OSF1. I would like to use a hard disk to carry files between
> the two systems. 

You need to have a disk partition layout, a partition slice layout,
and a slice file system layout in common between the machines.

This is unlikely unless you are running BSD on your Alpha, and even
then, that's unlikely, since the layout for BSD on an Alpha would
probably be identical to the OSF/1 layout to allow for cross-mounting
of file systems between OSF/1 and BSD locally.  Local cross-mounting
is much more important conceptually than foreign mounting.

Probably what is needed is an ISO 9660 writable FS, or some other
FS that has the byte order problems and layout problems addressed
automatically.

The main use here would be ISO 9660 CDROM mastering and removable
media.

> I know it is possible because I've done it, but I cannot do it again.
> Problems are with disk labels. When I disklabel the disk on FreeBSD,
> I cannot read it on OSF1, and vice versa. I've only tested the
> configuration where the full disk is used for FreeBSD/OSF1.  
> 
> Any idea ?

The easiest thing would be to write a tar, cpio, or backup image to the
raw device, and use it as a glorified tape drive instead of trying to
use it as a mountable file system in both locations.


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



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