posting a correct link to the "guide" you are using would help GREATLY
one that works
do you actually have a old cdrom drive???
or is it a dvd/cd RW combo
NOTE: Our GNOME VMware image of BackTrack has VMware Tools installed by default.
and did you install THAT image ?
also BT was created BY security EXPERTS for use BY COMPUTER EXPERTS
there is not much in it that an average person can use ( and NOT be breaking the laws in most countries ) .
mkdir /mnt/cdrom; mount /dev/cdrom /mnt/cdrom
you might want to break that up
but the error is telling you that a cdrom folder IS already in /mnt
and you do not have a cdrom device