LinuxQuestions.org - mount cdrom does not work

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mount cdrom does not work

I have tried to mount my cdrom drive as a user and get the following error message:

Code:

mount /dev/hdc /media/cdrom

mount: must be superuser to use mount

I run this as root and the drive mounts fine.
I'm currently running Slackware with kernel 2.6.17.13 with udev support. I have turned off rc.hotplug from /etc/rc.d

my fstab is as follows

Code:

/dev/hda2        swap            swap        defaults        0  0

/dev/hda5        /                reiserfs    defaults        1  1

/dev/hda1        /boot            ext3        defaults        1  2

/dev/hda6        /video          jfs        defaults        1  2

/dev/hdb1        /backup          reiserfs    defaults        1  2

/dev/cdrom      /media/cdrom    auto        ro,noauto,user,exec  0  0

/dev/fd0        /media/floppy    auto        noauto,user      0  0

devpts          /dev/pts        devpts      gid=5,mode=620  0  0

proc            /proc            proc        defaults        0  0

The permissions on my /dev/cdrom* is as follows:

Code:

ls -al /dev |grep cdrom

lrwxrwxrwx  1 root root          6 2006-11-17 21:54 cdrom -> cdrom0

lrwxrwxrwx  1 root root          3 2006-11-17 21:54 cdrom0 -> hdc

brw-rw----  1 root cdrom  22,  0 2006-11-18 08:53 hdc

Permissions on the directory

Code:

ls -al |grep cdrom

lrwxrwxrwx  1 root users  6 2006-10-18 03:36 cdrom -> cdrom0

drwxrwxr-x  2 root users  48 2006-09-26 10:50 cdrom0

drwxrwxr-x  2 root users  48 2006-09-26 10:50 cdrom1

I have tried everything i can think of and no solution. Thanks in advance.

Permission of /dev/hdc are such that only root user or a user belonging to group "cdrom" can access the cdrom.

So either add your user to group "cdrom" (see adduser man pages) or change permission of /dev/hdc.

To change permission of /dev/hdc, type in as root

chmod 666 /dev/hdc

then type in as your user:

mount /media/cdrom

It should be fine

Quote:

Originally Posted by kookie

I have tried to mount my cdrom drive as a user and get the following error message:

Code:

mount /dev/hdc /media/cdrom

mount: must be superuser to use mount

Just omit the /dev/hdc:

Code:

$ mount /media/cdrom

Quote:

mount /dev/hdc /media/cdrom

as titopoquito said the mount command is not proper
you can either give "mount /media/cdrom"
or the full manual command as root like, "mount -t iso9660 /dev/hdc /media/cdrom"

also dont change /dev permissons
IMPORTANT i found that there are unwanted simlinks pointing to your cd drive /dev/hdc please remove all the simlinks to /dev/hdc and please make a new one like "ln -sf /dev/hdc /dev/cdrom"

I've tried all of the above suggestions and have still come up with the same error of :

Code:

mount: must be superuser to use mount

i've noticed that everytime the computer has been restarted udev rewrites the permissions and symlinks in the /dev directory.

Have you somehow changed the permissions of /bin/mount?

Code:

-rwsr-xr-x 1 root root 60576 2006-09-25 10:48 /bin/mount

Quote:

Originally Posted by titopoquito

Have you somehow changed the permissions of /bin/mount?

Code:

-rwsr-xr-x 1 root root 60576 2006-09-25 10:48 /bin/mount

How do you reset the permission for mount.
I'm not sure how you got the rws???

Thank.

Its working now. Not sure what happen to the permissions on the mount and umount command.
I fixed this up and now i can mount the drive as a user. Thanks guys for all your help.