mount: /dev/cdroms/cdrom0: can't read superblock

michelbehr · n00b Joined: 04 Jul 2004 Posts: 29

Im getting this messages when I try to read some audio CDs... What am I missing here\\

NeddySeagoon · Posted: Thu Jul 08, 2004 7:23 pm Post subject:

michelbehr,

You don't mount audio CDs. They are played (and copied) without ever being mounted. They don't have a filesystem like iso9660 data CDs.
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Computer users fall into two groups:-
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michelbehr · n00b Joined: 04 Jul 2004 Posts: 29

Well, the thing is that when i used Slackware, on xmms, if i wanted to play some Audio CD track, all i'd do was go to /mnt/cdrom and all the tracks would be listed there... the thing is that i cant see any tracks now, nor in xmms nor ina a regular term... so i thought i should mount it...

Im lost here... how do i play an Audio CD track\\\

NeddySeagoon · Posted: Thu Jul 08, 2004 8:20 pm Post subject:

michelbehr,

Put the CD in the drive and launch the CD player of your choice.
It will depend on the analogue audio cable being connected from the drive to your sound card.
You will need to unmute the master volume and the right sound card input and set reasonable levels on the controls.
Only the control signals to spin the CD and change tracks are passed over the IDE cable.

You can also use digital audio extraction. A lot of CD players don't support this. Use xmms, configure it for digital audio extraction. Navigate to /mnt/cdrom and add the directory to the playlist.
You need to set pwm and master volume well up and unmuted.
Now all the commands are passed over the IDE bus as well as the audio data to the sound card.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

michelbehr · n00b Joined: 04 Jul 2004 Posts: 29

Ok, im using xmms... if i do click "file" to open a file :-)

and go to /mnt/cdrom i cant see any of the audio tracks (but BEFORE i installed gentoo i could see the tracks)

Then i tried this: open DIR, and selected /mnt/cdrom then it opened all the tracks (i wasnt able to choose)

My question is very simple: is there a way I can access audio tracks\\\

NeddySeagoon · Posted: Fri Jul 09, 2004 1:39 pm Post subject:

michelbehr,

Configure xmms to use digital audio extraction

michelbehr · n00b Joined: 04 Jul 2004 Posts: 29

I did exacly what u said... I even ran the "check disk"and it did read my CD drive:

paroneayea · Tux's lil' helper Joined: 16 Oct 2003 Posts: 87

Yeah, unfortunately, I seem to be having the same problem.
I also notice that a message pops up that says:
Directory unreadable: no such file or directory
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NeddySeagoon · Posted: Fri Jul 16, 2004 9:19 pm Post subject:

michelbehr,

It can take a good few seconds for the drive to spin up the CD. Wait at least 30 sec.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

carpman · Posted: Fri Jul 16, 2004 10:19 pm Post subject: Re: I tried...

NeddySeagoon · Posted: Fri Jul 16, 2004 10:26 pm Post subject:

All I can say is that it works for me - Honest.
Have you tried as root, to check for permissions problems?
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Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

Optimus' · Apprentice Joined: 01 Jul 2004 Posts: 209

wow sheesh I wish you replied to my question

This sorted out my problem with audio CDs!

Have you got Gnome to read these Audio CDs so I can view them from nautilus?

MacMasta · Posted: Sat Jul 17, 2004 12:01 am Post subject:

If you're using KDE (or have konqueror installed) take a look at
'audiocd://'; that'll bring up a nice virtual filesystem with cda, mp3, and ogg files for the tracks.

~Mac~

carpman · Posted: Sat Jul 17, 2004 9:24 am Post subject:

NeddySeagoon · Posted: Sat Jul 17, 2004 11:01 am Post subject:

carpman,

The entry in fstab that says 'users' allows users to mount and unmount CDs. There is a subtle difference between 'users' and 'user' here. 'users' allows any user to mount/unmount, 'user' only allows the user who did the mount to unmount.

I was thinking more along the lines of permissions to do various things, rather than device pernissions. The permissions on /mnt/cdrom will vary, and don't matter anyway for audio CDs since they are never mounted.

e.g. have you got your users (and root) in the audio group ?
look in /etc/group
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

aichoudh · n00b Joined: 26 Sep 2004 Posts: 1

Instead of add file, try doing add directory, and selecting /mnt/cdrom. The add file way didn't work for me (it didnt show the tracks when I went to that directory), but the add directory way worked like a charm.

roni