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

[Benjamin Sher]

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


[sher at localhost ~]$ su
Password:
[root at localhost sher]# mount /dev/hdd
[root at localhost sher]# mount /dev/hdc
mount: No medium found
[root at 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 at localhost sher]# mount /media/cdrecorder
mount: No medium found
[root at localhost sher]#

Here is my /etc/fstab:

[root at localhost sher]# exit
exit
[sher at 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 at 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