Frank, here is "ftab"
# /etc/fstab
proc            /proc        proc    defaults          0       0
sysfs           /sys         sysfs   defaults          0       0
devpts          /dev/pts     devpts  defaults          0       0
tmpfs           /dev/shm     tmpfs   defaults          0       0
/dev/fd0        /mnt/fd0        auto     noauto,users,exec    0 0 # Added by TC
/dev/hda1       /mnt/hda1       vfat     noauto,users,exec,umask=000 0 0 # Added by TC
/dev/hdc1       /mnt/hdc1       vfat     noauto,users,exec,umask=000 0 0 # Added by TC
/dev/hdd        /mnt/hdd        iso9660  noauto,users,exec    0 0 # Added by TC
/dev/sda1       /mnt/sda1       ext2     noauto,users,exec,relatime 0 0 # Added by TC
/dev/sdb1       /mnt/sdb1       ext3     noauto,users,exec,relatime 0 0 # Added by TC
Here is some of the "dmesg" output.  Here are the first 2 lines before the error messages start:
sd 1:0:0:0: Attached scsi generic sg1 type 0
squashfs: version 4.0 (2009/01/31) Phillip Lougher
Here is the error message.  The same message repeats 9 times:
hdd: command error: status=0x51 { DriveReady SeekComplete Error }
hdd: command error: error=0x54 <3>{ AbortedCommand LastFailedSense=0x05 }
ide: failed opcode was: unknown
ATAPI device hdd:
  Error: Illegal request -- (Sense key=0x05)
  Illegal mode for this track or incompatible medium -- (asc=0x64, ascq=0x00)
  The failed "Read 10" packet command was: 
  "28 00 00 00 14 9e 00 00 02 00 00 00 00 00 00 00 "
end_request: I/O error, dev hdd, sector 21112
Buffer I/O error on device hdd, logical block 2639
Here are the 2 lines immediately after the last of the error messages:
cdrom: hdd: mrw address space DMA selected
ISO 9660 Extensions: Microsoft Joliet Level 3
As you can see from "ftab", "hdd" is the CD drive and there are a floppy drive, 2 hard drives, and 2 USB flash drives on the machine.  I'm booting from a live CD.  Backup and the "TCE" folder are on "sda1".  If some of the above isn't clear or if you want the complete "dmesg" output, please let me know.
Thanks for pointing out how to use "dmesg".  I'm afraid that I'm just getting started in Linux after all these years.