Can't mount CDROM/CDRW/DVDROM/FLOPPY

kriidler · 07-12-2005, 11:10 PM

Hi All,

In a nutshell Do what I want, I can't read any removable media on my PC

More info
Firstly, I thought to myself 'K, before you go posting a new thread asking for help, check if you can't find the answers first!'
well, I did that, and now I'm worse off. (I'm not saying that the answers I got from the forum is bad!)

If it is of any help, here's my fstab file:

Code:

/dev/hda6        swap             swap        defaults         0   0
/dev/hda1        /                ext3        defaults         1   1
/dev/hda5        /home            ext3        defaults         1   2
#/dev/cdrom       /mnt/cdrom       iso9660     noauto,owner,ro  0   0
#/dev/cdrom       /mnt/cdrom       iso9660     noauto,users,ro  0   0
/dev/cdrom       /mnt/cdrom       iso9660     noauto,users     0   0
/dev/dvd         /mnt/dvd         iso9660     noauto,users,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

And here's my PC details:

Code:

1 x HD 40gB partitioned as follows:
           ~1gB       <-- SWAP
         ~20gB ext3 <-- /home
	 ~19gB ext3 <-- /
1 x CDRW
1 x DVDROM
1 x FLOPPY       <-- 3.25 inch stiffy drive

Thanks
K

Smokey · 07-12-2005, 11:18 PM

Are you trying to mount a music cd?

kriidler · 07-12-2005, 11:41 PM

Quote:

Originally posted by Smokey
Are you trying to mount a music cd?

Hi Smokey.
It doesn't realy matter. I cant read music or data CDs, baught or burned. I can't read movie or data DVDs. Or any floppies

I know the physical drives are detected during boot-up as /dev/hdc, /dev/hdd and /dev/fd0.
k

gbonvehi · 07-12-2005, 11:44 PM

Try: mount -t auto /dev/hdd /mnt

If your cd-rom is hdd of course. Take a look at /mnt directory to see if it was mounted. You can try the -t iso9660 option instead of auto.
Music CDs can't be mounted because they don't have a filesystem.

If it was mounted then check the file /dev/cdrom to see if it's pointing to the right device with: ls -l /dev/cdrom
If it's not do: ln -s -f /dev/cdrom /dev/hdd

kriidler · 07-12-2005, 11:57 PM

Quote:

Originally posted by gbonvehi
Try: mount -t auto /dev/hdd /mnt

If your cd-rom is hdd of course. Take a look at /mnt directory to see if it was mounted. You can try the -t iso9660 option instead of auto.
Music CDs can't be mounted because they don't have a filesystem.

If it was mounted then check the file /dev/cdrom to see if it's pointing to the right device with: ls -l /dev/cdrom
If it's not do: ln -s -f /dev/cdrom /dev/hdd

Hi,
From bash, using mount -t auto /dev/hdd /mnt
"mount: block device /dev/hdd is write-protected, mounting read-only"
This is what I get when I try to read the cd in konqueror:
"file:/mnt/cdrom doesn't seem to exist anymore"

Using mount -t iso9660 /dev/hdd /mnt
I got :

Code:

mount: block device /dev/hdd is write-protected, mounting read-only
mount: /dev/hdd already mounted or /mnt busy
mount: according to mtab, /dev/hdd is already mounted on /mnt

I'll try the others. goto go now.

gbonvehi · 07-13-2005, 01:09 AM

It was mounted! It just that it was mounted in /mnt not /mnt/cdrom.
That's why you got the second error, because the /mnt already had the cd mounted on it.
Issue the first command but point it to /mnt/cdrom instead and will work

Code:

mount -t auto /dev/hdd /mnt/cdrom

kriidler · 07-13-2005, 12:42 PM

Quote:

Originally posted by gbonvehi
It was mounted! It just that it was mounted in /mnt not /mnt/cdrom.
That's why you got the second error, because the /mnt already had the cd mounted on it.
Issue the first command but point it to /mnt/cdrom instead and will work

Code:

mount -t auto /dev/hdd /mnt/cdrom

Hi again gbonvehi.
I just tried the above and got

Code:

# mount -t auto /dev/hdd /mnt/cdrom
mount: Too many levels of symbolic links
#

note: I tried all the other things you suggested, while we were offline.
"ls -l /dev/cdrom" and "ln -s -f /dev/cdrom /dev/hdd" I guess that's why I'm getting this error now. Got any ideas on how to undo these?

k

Matir · 07-13-2005, 01:03 PM

Please post the output of:

Code:

ls -l /dev/cdrom /dev/hd? /dev/dvd

Also, you might want to change the "users" option in fstab to just "user", which enables user-mounting.

gbonvehi · 07-13-2005, 01:20 PM

The symlink command should've been backwards, I'm very sorry that was my fault.
/dev/hdd is now a symlink to /dev/cdrom which is a symlink to /dev/something, that's why you're getting that error.

To fix this, first remove the hdd link with: rm /dev/hdd
Then recreate it with: /dev/MAKEDEV hdd
Then create the correct symlink, this time: ln -sf /dev/hdd /dev/cdrom

Hopefully all should be working by now

kriidler · 07-13-2005, 02:10 PM

Hi Matir,

Quote:

Originally posted by Matir
Please post the output of:

Code:

ls -l /dev/cdrom /dev/hd? /dev/dvd

as requested:

Code:

# ls -l /dev/cdrom /dev/hd? /dev/dvd
lrwxrwxrwx  1 root root      8 2005-07-11 19:26 /dev/cdrom -> /dev/hdc
lrwxrwxrwx  1 root root      8 2005-07-13 08:45 /dev/dvd -> /dev/hdc
brw-rw----  1 root disk  3,  0 2002-06-09 21:27 /dev/hda
brw-rw----  1 root disk  3, 64 2002-06-09 21:27 /dev/hdb
lrwxrwxrwx  1 root root      8 2005-07-13 08:38 /dev/hdc -> /dev/dvd
lrwxrwxrwx  1 root root     10 2005-07-13 08:38 /dev/hdd -> /dev/cdrom
brw-rw----  1 root disk 33,  0 2002-06-09 21:27 /dev/hde
brw-rw----  1 root disk 33, 64 2002-06-09 21:27 /dev/hdf
brw-rw----  1 root disk 34,  0 2002-06-09 21:27 /dev/hdg
brw-rw----  1 root disk 34, 64 2002-06-09 21:28 /dev/hdh
brw-rw----  1 root disk 56,  0 2002-06-09 21:28 /dev/hdi
brw-rw----  1 root disk 56, 64 2002-06-09 21:28 /dev/hdj
brw-rw----  1 root disk 57,  0 2002-06-09 21:28 /dev/hdk
brw-rw----  1 root disk 57, 64 2002-06-09 21:28 /dev/hdl
brw-rw----  1 root disk 88,  0 2003-09-02 22:02 /dev/hdm
brw-rw----  1 root disk 88, 64 2003-09-02 22:02 /dev/hdn
brw-rw----  1 root disk 89,  0 2002-06-09 21:28 /dev/hdo
brw-rw----  1 root disk 89, 64 2002-06-09 21:28 /dev/hdp
brw-rw----  1 root disk 90,  0 2002-06-09 21:28 /dev/hdq
brw-rw----  1 root disk 90, 64 2002-06-09 21:28 /dev/hdr
brw-rw----  1 root disk 91,  0 2002-06-09 21:28 /dev/hds
brw-rw----  1 root disk 91, 64 2002-06-09 21:28 /dev/hdt
#

[quote]
Also, you might want to change the "users" option in fstab to just "user", which enables user-mounting.

[/qoute] Is this "user" is it a group id? because if it is, there's no such group on my pc.

kriidler · 07-13-2005, 02:16 PM

gbonvehi, in doing what you suggest mean I've got to reboot? Also, will it interfere with the stuff for Matir?

kriidler · 07-13-2005, 02:40 PM

hi, just did

Code:

rm /dev/hdd
/dev/MAKEDEV hdd
ln -sf /dev/hdd /dev/cdrom

rebooted, and I'm still getting the too many levels error on the cdrom and a no medium found on the dvd!

Matir · 07-13-2005, 02:55 PM

Code:

rm /dev/hdc /dev/hdd /dev/dvd /dev/cdrom
/dev/MAKEDEV /dev/hdc
/dev/MAKEDEV /dev/hdd
ln -s /dev/hdc /dev/cdrom
ln -s /dev/hdd /dev/dvd

This assumes your CDROM is your secondary master and your dvd is your secondary slave.

kriidler · 07-13-2005, 03:10 PM

Quote:

Originally posted by Matir
This assumes your CDROM is your secondary master and your dvd is your secondary slave.

Hi Matir, how will I confirm this? During boot, I've seen that the dvd is /hdc and the cd is /hdd. is this what you mean? Also, does it matter that the actual cd drive is a cd writr as well?

Thanks
k

Matir · 07-13-2005, 03:15 PM

If you saw that during boot, then just switch around the links being created.

Code:

rm /dev/hdc /dev/hdd /dev/dvd /dev/cdrom
/dev/MAKEDEV /dev/hdc
/dev/MAKEDEV /dev/hdd
ln -s /dev/hdc /dev/dvd
ln -s /dev/hdd /dev/cdrom

It does not matter that the cdrom is actually a writer, this is just to give your system some more recognizable names for the devices.