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Date: Thu, 12 Sep 2013 18:12:42 +0200
From: Polytropon <freebsd@edvax.de>
To: Matthias Apitz <guru@unixarea.de>
Subject: Re: cant mount CD
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On Thu, 12 Sep 2013 10:13:28 +0200, Matthias Apitz wrote:
> # mount -t cd9660 -o -e /dev/acd0 /mnt
> mount_cd9660: /dev/acd0: Invalid argument

Try cd instead of acd. The acd interface has been "deprecated"
in favour of "SCSI over ATA" for optical devices (including
ATAPI CD and DVD drives).

	# mount_cd9660 -e /dev/cd0 /mnt

In case the extended attributes cause problems, try first
without using them in the "normal way":

	# mount -t cd9660 -o ro /dev/cd0 /mnt

Permission problems should not count here.

Also make sure it's really an ISO-9660 file system:

	% file -s /dev/acd0 
	/dev/acd0: ISO 9660 CD-ROM filesystem data '0110241307 

This example from a 8.2 system where the acd subsystem is still
being used. :-)



> the 'cdrecord -minfo' command gives lines in /var/log/messages as:
> 
> Sep 12 10:09:36 vm-9Current kernel: acd0: FAILURE - MODE_SELECT_BIG
> ILLEGAL REQUEST asc=0x26 ascq=0x00 
> Sep 12 10:09:36 vm-9Current kernel: acd0: FAILURE - READ_BUFFER ILLEGAL
> REQUEST asc=0x24 ascq=0x00 
> Sep 12 10:09:36 vm-9Current kernel: acd0: FAILURE - START_STOP ILLEGAL
> REQUEST asc=0x24 ascq=0x00 
> Sep 12 10:09:36 vm-9Current kernel: acd0: FAILURE - MODE_SELECT_BIG
> ILLEGAL REQUEST asc=0x26 ascq=0x00

Proper cabling? Drive and media not covered with dust? ;-)



-- 
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...