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Old 09-26-2003, 04:03 PM   #1
alitrix
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Unhappy Problems with CD-ROM


I am having problems with trying to read a CD-ROM (a audio one).

sh-2.05b$ mount /dev/cdrom
mount: only root can mount /dev/cdrom on /mnt/cdrom
sh-2.05b$ mount /cd
mount: can't find /cd in /etc/fstab or /etc/mtab

That's as a normal user.

I tryed it as root as well, it didn't work either:
bash-2.05b# mount /dev/cdrom
mount: wrong fs type, bad option, bad superblock on /dev/cdrom,
or too many mounted file systems
bash-2.05b# mount -t iso9660 /dev/cdrom /mnt/cdrom/
mount: block device /dev/cdrom is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/cdrom,
or too many mounted file systems

Please help!!!
I can't do a shit! And I want to use my CD-ROM to play CD's :S

(Oh, btw.. I have Slackware 9.0... with Readhat9.0 I didn't have this problem)

Last edited by alitrix; 09-26-2003 at 04:06 PM.
 
Old 09-26-2003, 04:07 PM   #2
david_ross
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You don;t need to mount audio CDs - just ask your software to play it.
 
Old 09-26-2003, 04:09 PM   #3
aaa
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If it's an audio cd, it can't be mounted. Use some sort of software to play it. Add the "user" option in your /etc/fstab file so regular users would be allowed to mount.
 
Old 09-26-2003, 04:10 PM   #4
alitrix
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It isn't possible...
I am running atm fluxbox, so I used /opt/kde/bin/kscd
But it can't read the /dev/cdrom.

Error looks something like this:
CD-ROM read or access error (or no disc in drive)
Please make sure you have access permissions to:
/dev/cdrom

(And yes, I have.. cause in /etc/fstab there is something like this: ro,users,noauto, .....)
 
Old 09-26-2003, 04:30 PM   #5
alitrix
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sh-2.05b$ cat /etc/fstab | grep cdrom
/dev/cdrom /mnt/cdrom iso9660 noauto,owner,ro 0 0

I have that at the moment.
What should I change?
 
Old 09-26-2003, 04:46 PM   #6
david_ross
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What are the permissions on the device itself?
 
Old 09-26-2003, 05:16 PM   #7
alitrix
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Uh, dunno :S?
Thought that is oke, since I never change the lines that are default made by Slackware itself

Does it miss something?
 
Old 09-27-2003, 08:17 AM   #8
david_ross
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Run:
ls -l /dev/cdrom

This shouls show a symbolic link to another "real" device. Do an ls -l on it and check the permisions. If you are unsure thn just post the output.
 
Old 09-27-2003, 12:48 PM   #9
alitrix
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sh-2.05b$ ls -l /dev/cdrom
lrwxrwxrwx 1 root root 8 Jun 14 17:13 /dev/cdrom -> /dev/hdc

That's the output.
Can you explain me what the hell is going on :P?
Please tell me good news! :S
 
Old 09-27-2003, 12:56 PM   #10
aaa
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/dev/cdrom is linked to /dev/hdc. Check the permissions on /dev/hdc with "ls -l".
 
Old 09-27-2003, 01:05 PM   #11
alitrix
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sh-2.05b$ ls -l /dev/hdc
brw-rw---- 1 root disk 22, 0 Jun 9 2002 /dev/hdc

RW.. hm..
Still don't undestanding how to reach my CD :P
 
Old 09-27-2003, 01:11 PM   #12
aaa
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You can either change the permissions on /dev/hdc, or put the user you want to access the cdrom with in the disk group.
brw-rw---- 1 root disk
The b is for block device. The first rw- is the permissions for root. The second is the permission for whoever is in the disk group. The last --- are the permissions for everybody else. "root" means root owns the file. Disk means it's part of the disk group.
 
Old 09-27-2003, 01:13 PM   #13
alitrix
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So I should add group `users` into the the group `disk` as well.
And then users (me) can mount the device as well?
 
Old 09-27-2003, 02:16 PM   #14
david_ross
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Just put your user in the disk group in:
/etc/group

Or chmod the device so anoyone can access it:
chmod 666 /dev/hdc
 
Old 09-28-2003, 04:54 AM   #15
alitrix
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I checked /etc/group:
disk::6:root,adm,dbzgt

And I chmod /dev/hdc 666.
So it should be possible to mount know?
 
  


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