could not find cdrom

on solaris 10, when I injected my cd to the dvdrom, the cdrom did not mount by itself. how can I mount the cdrom manually?

Hey

bin/mount -F hsfs -o ro /dev/sr0 /cdrom
Mount an ISO 9660 CDROM

if you do not have vold running, you can use this command to mount an ISO 9660 cdrom by hand.

bye
lowbyte

when I did that, I got that "either /cdrom is busy or c0t0d0s2 is already mounted".
I am sure I am not using /cdrom in any way, but how can c0t0d0s2 is mounted while can not be seen when I use mount or df commands. Thanks!