Thanks for your commands, however I am getting an error when mounting the CD-ROM. it said
device is already mounted, /mnt is busy.
or allowable number of mount point exceeded.
I've umount /dev/dsk/c0t1d0s2 and another message appear
/dev/dsk/c0t1d0s2 is not in mnttab
/dev/dsk/c0t1d0s2 not mounted
What do you think of the above output