Ok so im installing WoW through CD's and i noticed in the Tips and Tricks page it says this:
Unmount the DVD with: sudo umount /media/cdrom0
Remount the DVD: sudo mount -t udf -o ro,unhide /dev/cdrom /media/cdrom0
now i am not sure if i will have to do this, but i want to be safe anyway. what i'd like to know is, how exactly do you unmount and remount the DVD?