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Date: Mon, 29 Jan 2007 16:26:13 +0100
From: =?ISO-8859-1?Q?Bj=F6rn_K=F6nig?= <bkoenig@cs.tu-berlin.de>
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To: Jeremie Le Hen <jeremie@le-hen.org>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Cannot mount file-backed msdosfs filesystem
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Jeremie Le Hen schrieb:
> Hi,
> 
> (Please Cc: in your replies.)
> 
> I used to mount an msdosfs filesystem and it has been working correctly
> so far.  Unfortuntely I can't do it anymore today:
> 
> % jarjarbinks:/usr/src:108# mdconfig -lu 0
> % md0     vnode     1.8G  /mnt/msdos/FreeBSD-SSP_src.ufs
> % jarjarbinks:/usr/src:109# mount -t msdos /dev/md0 /home/tataz/src/ssp/src/
> % mount_msdosfs: /dev/md0: Invalid argument
> % jarjarbinks:/usr/src:110# fsck_msdosfs /dev/md0
> % ** /dev/md0
> % Invalid signature in boot block: 0000

I'm not sure, but the filename "FreeBSD-SSP_src.ufs" hints to an UFS 
file system. Try

     mount /dev/md0 /home/tataz/src/ssp/src/

instead. Executing fsck_msdosfs with an UFS file system gives me the 
same error message: Invalid signature in boot block: 0000.

Regards Björn