localhost compxpert # mount /mnt/dvd
mount: block device /dev/dvd is write-protected, mounting read-only
mount: /dev/dvd: can't read superblock
localhost compxpert # dmesg | tail
hdc: command error: status=0x51 { DriveReady SeekComplete Error }
hdc: command error: error=0x54 { AbortedCommand LastFailedSense=0x05 }
ide: failed opcode was: unknown
ATAPI device hdc:
  Error: Illegal request -- (Sense key=0x05)
  Logical block address out of range -- (asc=0x21, ascq=0x00)
  The failed "Read 10" packet command was:
  "28 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 "
end_request: I/O error, dev hdc, sector 0
FAT: unable to read boot sector
localhost compxpert #