mkdir /cdrom
mount -t iso9660 -o ro /dev/cdrom /cdrom
For Solaris:
mkdir -p /cdrom
mount -F hsfs -o ro /dev/dsk/c0t6d0s2 /cdrom
In Solaris, most of the time, CDROM is on target 6.
For HP-UX:
# Below is to find CDROM's path/device name
ioscan -fnC disk
mkdir /cdrom
mount -F cdfs -o rr /dev/dsk/c0t2d0 /cdrom
Note: Some people prefer to use "/mnt" in Solaris/Linux and some other prefer "/media" in Linux. It all depends on preference. :)