can't get cdrom to mount

Carl c.thorn at sbcglobal.net
Sat Jun 12 22:04:51 PDT 2010


akhiezer wrote:
>>  From blfs-support-bounces at linuxfromscratch.org Sun Jun  6 18:52:16 2010
>> Date: Sun, 06 Jun 2010 12:51:04 -0500
>> From: Carl<c.thorn at sbcglobal.net>
>> To: BLFS Support List<blfs-support at linuxfromscratch.org>
>> Subject: can't get cdrom to mount
>>
>> Hi
>> I have successfully built beyond linuxfromscratch to an almost full
>> function desktop based on the lfs version 6.6 using the blfs svn
>> version. I have a working word processor(abiword) a working
>> spreadsheet(gnumeric) and have added audacious audio player. Audacious
>> will read and play my audio cds. but gnome desktop will not mount the
>> cdrom. I get the following error message on bootup.
>> [49358.956254] hdc: command error: status=0x51 { DriveReady SeekComplete
>> Error }
>> [49358.956278] hdc: command error: error=0x54 { AbortedCommand
>> LastFailedSense=0x05 }
>> [49358.956288] hdc: possibly failed opcode: 0xa0
>> [49358.960145] end_request: I/O error, dev hdc, sector 1272680
>> [49358.960178] __ratelimit: 1 callbacks suppressed
>> [49358.960187] Buffer I/O error on device hdc, logical block 159085
>> [49358.976083] hdc: command error: status=0x51 { DriveReady SeekComplete
>> Error }
>> [49358.976107] hdc: command error: error=0x54 { AbortedCommand
>> LastFailedSense=0x05 }
>> and it repeats multiple times. I believe the error message comes from hal.
>> I have tried recompiling my kernel but I think everything is right there
>> and I have messed with fstab but am not sure I have that right. I don't
>> think there is anything wrong with the hardware as I have Ubuntu
>> installed on a different partition on the same machince and it mounts
>> the drive with no problem. I am open to any suggestions as to where to
>> look for a solution.
>> -- 
>>      
> 	.
> 	.
>    
>>      
>
> Those errors may be appearing if/because you're trying - directly or
> indirectly, via fstab or elsewhere - to explictly mount an audio cd:
> whereas of course there's no filesystem on an audio cd for mount to
> work with - it's an old chestnut.
>
> I've just now double-checked and verified this on an old-ish machine
> (p4 2.4ghz, ide) running slackware-13.0 (uses 2.6.29.x kernel, and
> 'hda/hdb/hdc/...' device naming), and using Xfce as Desktop Environment:
> put an audio CD into cd/dvd drive (here, it's /dev/hdc aka /dev/cdrom),
> do 'mount /dev/cdrom /mnt/tmp' (or similar) on command-line, and ...
> hey presto, almost exactly the same set of error messages as you list,
> show up here in /var/log/syslog .
>
> As for how to _stop_ the errors on your setup: I don't really know in
> enough detail, how to tell HAL/whatever to handle/detect audio cd -vs-
> data cd, or even if they need/want to; but, hopefully the info that you
> typically can't mount audio cd in the same way as data cd, will be of
> help.
>
>
> akhiezer
>
> Well I seem to have fixed it. I changed the line for the cdrom in /etc/fstab from
>    
/dev/hdc /media/cdrom0          iso9660  ro,user,noauto,unhide 0  0
to
/dev/hdc /media/cdrom         iso9660  ro,user,noauto,unhide 0  0
> now it mounts.
>
>
> --
>    




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