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Old 05-13-2004, 07:37 PM   #1
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can't mount /dev/cdrom no matter what I do

I have a Redhat Linux 2.4 server. I can't mount /dev/cdrom using this command: mount -t iso9660 /dev/cdrom /mnt/cdrom

I get a "not a block device" error. I have substituted everything from hda-c, sda-c, sr0-3, scd etc.. as device names and still no luck.

fstab file looks like:
/dev/cdrom /mnt/cdrom iso9660 noauto,owner,ro 0 0

I type : ls -l /dev/cdrom and it is a symbolic link to /dev/hda but using /dev/hda doesn't work either.

What am I missing - Thanks
Old 05-13-2004, 09:25 PM   #2
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For the cdroms and floppy drive I just use the second part...

mount /mnt/cdrom
mount /mnt/cdrom1
mount /mnt/floppy

umount /mnt/cdrom
umount /mnt/cdrom1
umount /mnt/floppy
Old 05-13-2004, 09:35 PM   #3
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Is this a new install?
Used to work but now it doesn't?
Changed anything lately?

Check the output of dmesg. Look for any messages relating to the CD drive.
Old 05-13-2004, 10:03 PM   #4
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are you trying to mount this as root or user???
change fstab line to read..........
/dev/cdrom /mnt/cdrom iso9660 noauto,owner,users,ro 0 0
Old 05-14-2004, 12:10 AM   #5
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Registered: Mar 2004
Location: japan
Distribution: debian
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have a look at /proc/devices, particularly the lines below "Block devices:".
the first column is the major number, the second is the device group.
For example, my system has two IDE block devices, so i see:
Block devices:
3 ide0
22 ide1

the major number helps you find the right device to use to access your devices.
for example, if i do ls -l /dev/hd?, i get:
brw-rw---- 1 root disk 3, 0 2002-03-15 06:51 /dev/hda
brw-rw---- 1 root disk 3, 64 2002-03-15 06:51 /dev/hdb
brw-rw---- 1 root disk 22, 0 2002-03-15 06:51 /dev/hdc
brw-rw---- 1 root disk 22, 64 2002-03-15 06:51 /dev/hdd
brw-rw---- 1 root disk 33, 0 2002-03-15 06:54 /dev/hde
brw-rw---- 1 root disk 33, 64 2002-03-15 06:54 /dev/hdf
here, the number in the 5th column (after "disk") indicates the major number, from which it is clear that i need to use either /dev/hda or /dev/hdb for the first IDE drive, and either /dev/hdc or /dev/hdd for the second IDE drive.


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