Originally Posted by chrism01
Not sure you did exactly what you thought, but I can recommend backing up files BEFORE editing (esp key stuff like fstab)
Anyway, grab the install media, boot from that and select the Rescue option, which should eventually mount the HDD under /mnt/sysimage & you go from there.
(NB: check the mount first; it may be ro or rw; I can't remember off-hand)
Thank you for the reply, Chris.
I did copy my original fstab as /etc/fstab.prelab
But I can't replace my original with backup copy.
I tried to overwrite the original by typing ' cp /etc/fstab.prelab /etc/fstab '
Then it said it can't process because /etc/fstab is read-only file.