linux-kernel - Re: iso9660 vs udf

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Date:	Wed, 19 Sep 2007 17:51:08 -0400
From:	Phillip Susi <psusi@....rr.com>
To:	"Andries E. Brouwer" <Andries.Brouwer@....nl>
CC:	linux-kernel@...r.kernel.org
Subject: Re: iso9660 vs udf

Andries E. Brouwer wrote:
> Today I got a CD. MacOS does not mount it and Linux does not
> mount it without an explicit filesystemtype option.
> That is,
> 	# mount /dev/hdc /dir -t iso9660
> works fine, but
> 	# mount /dev/hdc /dir
> 	mount: you didn't specify a filesystem type for /dev/hdc
>                I will try type udf
>         mount: wrong fs type, bad option, bad superblock on /dev/hdc,
>                missing codepage or other error
>                In some cases useful info is found in syslog - try
>                dmesg | tail  or so
> 	# dmesg | tail
>         UDF-fs INFO UDF 0.9.8.1 (2004/29/09) Mounting volume 'Wisk1956-82', timestamp 2006/03/07 16:26 (1078)
>         udf: udf_read_inode(ino 547) failed !bh
>         UDF-fs: Error in udf_iget, block=1, partition=1

What does the line for hdc show in /etc/fstab?  Mount tries whichever 
filesystem(s) is/are listed there if you omit -t.  My guess is that it 
only lists udf and this is a cd so it contains iso9660, not udf.

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