How to change the permission of my internal cd/dvd drive?

I decided to build my own gui (ubuntu server, openbox and stuff).

I am having a permissions problem with my cd drive. When I try to mount it with user privileges it tells me that I'm not allowed.

I can then mount it as root, and can see the content in the root window, but as a normal user i'm still not allowed to view the contents.

So my question here is, how can i configure it in a way that it mounts my cd/dvd's ALWAYS with my reading permissions?

sudo df -h :

Filesystem Size Used Avail Use% Mounted on
/dev/sda1 19G 6.5G 12G 37% /
udev 995M 4.0K 995M 1% /dev
tmpfs 402M 528K 401M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 1004M 4.0K 1004M 1% /run/shm
/dev/sda4 420G 306G 92G 77% /home
/dev/sda5 20G 16K 20G 1% /windows
/dev/sr0 6.1G 6.1G 0 100% /media/BIOSHOCK

2 Answers

The easiest thing is to add an entry to /etc/fstab like:

/dev/sr0 /media/cdrom auto noauto,owner,ro,users 0 0

Then you should be able to run

mount /media/cdrom

as a normal user. Alternatively, you can pass the uid= and gid= options to mount (when running under sudo) to tell mount who you want to own the mounted filesystem.

man mount

for more information.

seems like your permissions are not getting set correctly. Here is mine, to compare with yours. I see I do not have write access. May only be set when a writeable disk is inserted. The key is to have read access to 'world' since your user is not member or root group, like myself.

myname@ubuntu:~$ ll /dev/sr0 /media/cdrom0
brw-rw----+ 1 root cdrom 11, 0 2012-03-02 23:58 /dev/sr0
/media/cdrom0:
total 14
dr-xr-xr-x 1 root root 2048 2005-09-01 08:10 .
drwxr-xr-x 5 root root 4096 2012-02-16 22:21 ..
dr-xr-xr-x 1 root root 6144 2005-09-01 08:10 50 Bible Class Books (#1)
dr-xr-xr-x 1 root root 2048 2005-09-01 08:10 Bible Class Books (#2)

sudo chmod 555 /media/cdrom0 you shouldn't really need to do this, it ought to be automatic.