Why does mounting a CD/DVD fails with "no medium found on /dev/sr0"?

Solution Verified - Updated -

Issue

  • Trying to mount a CD/DVD fails with the following error message
[root@host]# mount /dev/cdrom /mnt
mount: you must specify the filesystem type

[root@host]# mount -t iso9660 /dev/cdrom /mnt
mount: no medium found on /dev/sr0

Environment

  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

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