Unable to read DVD

carlosinfl · 06-13-2005, 07:40 AM

I am just now trying to mount and access files from a DVD in my drive and can't seem to understand why nothing is detected.

Code:

root@slackbox:~# mount -t /dev/cdrom
root@slackbox:~# cd /dev/cdrom
-bash: cd: /dev/cdrom: Not a directory
root@slackbox:~# cd /mnt/cdrom/
root@slackbox:/mnt/cdrom# ls
root@slackbox:/mnt/cdrom#

Here is a copy of my FSTAB...

# This file is edited by fstab-sync - see 'man fstab-sync' for details
/dev/sda1 / reiserfs defaults 1 1
/dev/cdrom /mnt/cdrom iso9660 noauto,owner,ro 0 0
/dev/fd0 /mnt/floppy auto noauto,owner 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
proc /proc proc defaults 0 0
/dev/sdb /mnt/usbkey vfat gid=100,mode=777,defaults,auto,rw$
none /sys sysfs defaults 0 0
/dev/hdc /media/cdrecorder auto user,exec,noauto,commen$

trickykid · 06-13-2005, 08:19 AM

Does /dev/cdrom actually point to the correct device? What is it currently linked to?

carlosinfl · 06-13-2005, 08:24 AM

Quote:

Originally posted by trickykid
Does /dev/cdrom actually point to the correct device? What is it currently linked to?

I really don't know - how can I determine if it is or is not...???

harken · 06-13-2005, 08:30 AM

ls -a /dev/cdrom

carlosinfl · 06-13-2005, 08:52 AM

Code:

root@slackbox:/mnt/cdrom# ls -a /dev/cdrom
/dev/cdrom@

I still don't see anything and I have a UT2004 DVD sitting in there.

oneandoneis2 · 06-13-2005, 09:03 AM

If you use -t, you have to actually specify a filesystem.

I'm not sure DVDs use iso9660. . . try "mount -t auto" - should work

ethics · 06-13-2005, 09:09 AM

i don't see anything that would mount the DVD into /mnt/cdrom there.

If your fstab hasn;t been touched by you it's probably correct and that's the device

what about

mount /dev/cdrom /mnt/cdrom

ls /mnt/cdrom

this works whenever i mount my cd rom devices

Marius2 · 06-13-2005, 09:19 AM

Quote:

Originally posted by carlwill
I am just now trying to mount and access files from a DVD in my drive and can't seem to understand why nothing is detected.

Code:

root@slackbox:~# mount -t /dev/cdrom root@slackbox:~# cd /dev/cdrom -bash: cd: /dev/cdrom: Not a directory root@slackbox:~# cd /mnt/cdrom/ root@slackbox:/mnt/cdrom# ls root@slackbox:/mnt/cdrom#

Here is a copy of my FSTAB...

# This file is edited by fstab-sync - see 'man fstab-sync' for details
/dev/sda1 / reiserfs defaults 1 1
/dev/cdrom /mnt/cdrom iso9660 noauto,owner,ro 0 0
/dev/fd0 /mnt/floppy auto noauto,owner 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
proc /proc proc defaults 0 0
/dev/sdb /mnt/usbkey vfat gid=100,mode=777,defaults,auto,rw$
none /sys sysfs defaults 0 0
/dev/hdc /media/cdrecorder auto user,exec,noauto,commen$

The correct syntax would be
mount [device] [mount directory]
that is, if your device is /dev/cdrom and the directory you want to mount it to is /mnt/cdrom, you'd type
mount /dev/cdrom /mnt/cdrom

oneandoneis2 · 06-13-2005, 09:24 AM

That's not necessary for items in the fstab - you only need to specify one of the two, mount point or dev node, and it will use the fstab entry to work out the other.

harken · 06-13-2005, 10:21 AM

Sorry, I made a typo. Try 'ls -al /dev/cdrom' to see where it links to. You should see something like '-> /dev/hdc' in the ouptut. Or, if you have two optical drives, it could be /dev/hdd. On the other hand, if you have only one, I don't see why would you specify in fstab both /dev/cdrom and /dev/hdc.
If /dev/cdrom is indeed your only drive, see if this works:

Code:

mount -t iso9660 /dev/hdc /mnt/cdrecorder
ls -al /mnt/cdrecorder

And if you want to see which drive is mounted where, simply type 'mount'.

carlosinfl · 06-13-2005, 10:27 AM

bah...

Code:

root@slackbox:/# mount -t iso9660 /dev/hdc /mnt/cdrecorder
mount: mount point /mnt/cdrecorder does not exist

harken · 06-13-2005, 10:34 AM

Ok, try this one:

Code:

mount -t iso9660 /dev/hdc /media/cdrecorder
ls -al /media/cdrecorder
man mount

Again my mistake, it looked to me like fstab said mnt instead of media.

carlosinfl · 06-13-2005, 10:39 AM

That worked!

Code:

root@slackbox:/# mount -t iso9660 /dev/hdc /media/cdrecorder
mount: block device /dev/hdc is write-protected, mounting read-only
root@slackbox:/# ls -al /media/cdrecorder
total 28972
dr-xr-xr-x  1 root root     2048 2004-04-09 23:05 ./
drwxr-xr-x  3 root root       80 2005-06-12 21:04 ../
-r-xr-xr-x  1 root root       53 2004-03-03 13:47 AutoRun.inf*
dr-xr-xr-x  1 root root     2048 2004-04-09 23:05 CD1/
dr-xr-xr-x  1 root root     2048 2004-04-09 23:05 CD2/
dr-xr-xr-x  1 root root     2048 2004-04-09 23:05 CD3/
dr-xr-xr-x  1 root root     2048 2004-04-09 23:05 CD4/
dr-xr-xr-x  1 root root     2048 2004-04-09 23:05 CD5/
dr-xr-xr-x  1 root root     2048 2004-04-09 23:05 CD6/
-r-xr-xr-x  1 root root    24576 2004-03-03 13:57 Setup.exe*
-r-xr-xr-x  1 root root 29627635 2004-03-03 21:42 linux-installer.sh*

harken · 06-13-2005, 10:45 AM

Good. If so, get rid of that last line in fstab and modify the second one to look like this:

Code:

/dev/hdc /media/cdrecorder iso9660 noauto,exec,users,ro 0 0

Next time you want to use you dvd drive, run

Code:

mount /dev/hdc

and you know it'll be hooked to /media/cdrecorder.