CD-Rom is not a valid block device.

MikeEnIke · 03-15-2006, 02:28 PM

Hey guys, I installed slackware on my rig probably about 6-8 months ago. Everything has worked fine, I'm a bit of a linux n00b but I'm good with computers so I've learned pretty quickly. Now, I have recently wanted to isntall samba because I realized that getting it is how I will be able to access my windows network and the printer connected to my windows computer. I found out that samba is a package on the first slack CD so I tried to put it in and mount it. Well i get an error saying "mount: /dev/cdrom is not a valid block device." and it has worked in the past. The only thing that I changed on my computer within that past month is I got a new motherboard, but it was the same mother board... same version, brand, everything (Abit AN7). So I type "mount /mnt/cdrom" and I get that error. Has anyone has this problem in the past and can anyone offer me any kind of insight into fixing it? Thanks.

uselpa · 03-15-2006, 02:32 PM

Can you post the output of `cat /etc/fstab` and `v /dev/cd*` ?

MikeEnIke · 03-15-2006, 02:39 PM

fstab output is

Code:

/dev/cdrom       /mnt/cdrom       auto        noauto,owner,ro  0   0

and the /dev/cd* is

Code:

lrwxrwxrwx  1 root root      8 2005-12-26 22:03 /dev/cdrom -> /dev/hdc
brw-rw----  1 root cdrom 24, 0 1994-07-18 16:07 /dev/cdu535

uselpa · 03-15-2006, 02:42 PM

And now, `v /dev/hdc` ?

MikeEnIke · 03-15-2006, 02:44 PM

Code:

brw-rw----  1 root disk 22, 0 2002-06-09 19:27 /dev/hdc

uselpa · 03-15-2006, 02:57 PM

Did you mount as root or as a regular user?

MikeEnIke · 03-15-2006, 03:00 PM

mounted as root.

michaelk · 03-15-2006, 03:32 PM

Is the CDROM drive still /dev/hdc? i.e. connected to 2nd IDE controller master?
Check the output of the dmesg console command for messages relating to hdc. Do you see any errors?
Is this the first time you have attempted to use the drive since replacing the motherboard?
Is the drive still enabled in the motherboard BIOS?

MikeEnIke · 03-15-2006, 03:56 PM

Haha, how could I be so stupid. I plugged it into the wrong IDE slot when I reinstalled the new mobo. Thanks man.

HendiX · 03-17-2006, 01:11 AM

IDE primary master --> hda
IDE primary slave --> hdb
IDE secondary master --> hdc
IDE secondary slave --> hdd

Example
when you installed slackware and cdrom plugged intohdb at first time. And you want to change cdrom into hdd , all you have todo is :
1. remove file /dev/cdrom
2. create the new one as root
#link /dev/hdd /dev/cdrom
mount your cdrom as usually
GOD BLESS YOU