Hi All,
I just bought the SUN x2200m2. After I installed Solaris, I cannot see the CD/DVD ROM. I cannot mount the CD/DVD ROM since it says already mounted. When I try unmount it I get message that CD/DVD is not mounted. 
Any idea please.
Thx
Hard to tell without you providing any clue.
What media are you using?
How do you mount/unmount it ?
How do you check it is mounted ?
What are the system messages ?
iostat -En
/etc/init.d/volmgt stop
mount -F hsfs /dev/dsk/cxtxdxsx /mnt
try...
If vold is running the DVD might well already be mounted!
Check by running:
$ mount | grep cdrom
it should be mounted to something like /cdrom/cdrom0 the default device being /dev/sr0.
I have ever come across an issue like the DVD is not even detected from the OS. iostat -En does not show. when I checked the device under /dev/dsk and tried to mount it, it says no such device or file. but after bringing the system to single user, im able to mount my CD. its on a V245 system.. not sure if the OP is experiencing the same.