I was having some problems with my new install accessing CD data discs, so I edited /etc/fstab, just as I did for similar problems when I was running Mandriva Free 2007.0 several years ago. I suggest this in case others are having accessing problems. My problems are now solved.
Original /etc/fstab/ >>
[rg@localhost etc]$ cat fstab
# Entry for /dev/sda1 :
UUID=22889cd7-d67d-4466-b1d1-b9a8875f339c / ext4 defaults 1 1
none /dev/pts devpts defaults 0 0
tmpfs /dev/shm tmpfs defaults 0 0
# Entry for /dev/sda6 :
UUID=88081151-11cb-46bd-b2d3-d96833653c6d /home ext4 defaults 1 2
none /proc proc defaults 0 0
none /tmp tmpfs defaults 0 0
# Entry for /dev/sda5 :
UUID=1e60af4d-cf7b-4553-a065-b99912d43d2d swap swap defaults 0 0
[rg@localhost etc]$
Modified /etc/fstab/ >>
[rg@localhost etc]$ cat fstab
# Entry for /dev/sda1 :
UUID=22889cd7-d67d-4466-b1d1-b9a8875f339c / ext4 defaults 1 1
none /dev/pts devpts defaults 0 0
tmpfs /dev/shm tmpfs defaults 0 0
# Entry for /dev/sda6 :
UUID=88081151-11cb-46bd-b2d3-d96833653c6d /home ext4 defaults 1 2
/dev/sr0 /media/cdrom auto rw,noauto,users,sync,exec 0 0
none /proc proc defaults 0 0
none /tmp tmpfs defaults 0 0
# Entry for /dev/sda5 :
UUID=1e60af4d-cf7b-4553-a065-b99912d43d2d swap swap defaults 0 0
[rg@localhost etc]$