CD fails to show contents -- How to solve it?

[Delphi123]

Dear friends:

I have two Atapi drive: one is a CD/CDWriter (/dev/hdc mounted on /media/cdrecorder) the other is a DVD/CD drive (/dev/hdd mounted on /media/cdrom). My DVD drive (dev/hdd or /media/cdrom) works perfectly. I can play videos it, and I can also use it as a CD. I just transferred data from a data CD to my Linux via this /dev/hdd. When I opened the drive with my File Manager, it showed the contents of the drive, first of my DVD movie, then of my data CD. And CD/CDWriter does correctly record data. I used K3b and compiled a CD and burned it. But when I try to read the CD after burning it, I can't. The contents do not show up.

I asked about this before. At first, I thought it was just a cosmetic matter. I was getting an I/O error message for my CD/CDWriter and my DVD during bootup. So long as the drives worked, that was fine with me. The CD/CDWriter plays my music CD's, the DVD plays my movie DVD's. So far so good.
However, although I installed my Scientific Linux system from data CD's (using my , now it turns out that I cannot transfer any of my data files from a data CD to my computer via my CD/CDWriter drive. I can only do it via my DVD drive, whose contents show up correctly in File Manager.

The reason I had to use my DVD/CD drive to transfer my files to my computer is that my regular CD drive (CD/CDWriter or /dev/hdc) cannot read any of the contents. None of the contents show up in File Manager or in the terminal. Please see below:

[sher@localhost ~]$ su
Password:
[root@localhost sher]# cd /media/cdrecorder
[root@localhost cdrecorder]# ls
[root@localhost cdrecorder]#


[sher@localhost ~]$ su
Password:
[root@localhost sher]# mount /dev/hdd
[root@localhost sher]# mount /dev/hdc
mount: No medium found
[root@localhost sher]# mount /media/cdrom
mount: /dev/hdd already mounted or /media/cdrom busy
mount: according to mtab, /dev/hdd is already mounted on /media/cdrom
[root@localhost sher]# mount /media/cdrecorder
mount: No medium found
[root@localhost sher]#

Here is my /etc/fstab:

[root@localhost sher]# exit
exit
[sher@localhost ~]$ cat /etc/fstab
# This file is edited by fstab-sync - see 'man fstab-sync' for details
/dev/VolGroup00/LogVol00 / ext3 defaults 1 1
LABEL=/boot /boot ext3 defaults 1 2
none /dev/pts devpts gid=5,mode=620 0 0
none /dev/shm tmpfs defaults 0 0
none /proc proc defaults 0 0
none /sys sysfs defaults 0 0
/dev/VolGroup00/LogVol01 swap swap defaults 0 0
/dev/hdd /media/cdrom auto noauto,user,exec,ro 0 0
/dev/hdc /media/cdrecorder autonoauto,user,exec,ro 0 0
/dev/sda4 /media/IOMEGA vfat pamconsole,noatime,sync,fscontext=system_u:object_ r:removable_t,exec,noauto,managed 0 0
/dev/fd0 /media/floppy auto pamconsole,fscontext=system_u:object_r:removable_t ,exec,noauto,managed 0 0
[sher@localhost ~]$

I do not have this problem in Windows (dual-boot), so I know it's not the drive.

I imagine this is a software configuration issue. If so, how can I correctly configure my /dev/hdc CD/CDWriter so it can show its contents in File Manager.

Thank you so much.

Benjamin

[kage]

Try 'mount -t iso9660 /dev/hdc' and see what happens. On a side note, could you test the cd drive using a live cd such as knoppix? It might be a linux hardware problem, or it could be specific to your distro, and it would be good to find out which, if any, is causing this problem.

[Delphi123]

Dear kage:

You got it!!!

That's exactly what the system was asking for. It need to know the file system. See below:

[root@localhost etc]# mount /dev/hdc /media/cdrecorder -t iso9660
mount: No medium found
[root@localhost etc]# mount /dev/hdc /media/cdrecorder -t iso9660
mount: block device /dev/hdc is write-protected, mounting read-only
[root@localhost etc]# cd /media/cdrecorder
[root@localhost cdrecorder]# ls
all-20050412.tar.bz2 phpbb_db_backup.sql RealPlayer10GOLD.rpm
[root@localhost cdrecorder]#

Thanks a million!

Benjamin

[Delphi123]

Dear kage:

Forget the music CD part.

Here is what happens:

A music CD will play but not show its contents in File Manager either in my CD/CDWriter drive or in my DVD/CD drive. But a data CD will. Why? Because, as I found out, a music CD does NOT have a file system at all. So, there is nothing for Linux to recognize.

But why then is a DVD able to display its contents? Is there a difference between a CD and a DVD on this point?

Thank you.

Benjamin

[Delphi123]

Problem Solved!

The music CD DOES shows its contents, not in the File Manager but in the CD player. KSCD shows the contents perfectly while playing them.

Solved!

Benjamin

[kage]

Glad you got it all working!

-kage