In this example, I am mounting an ISO image called Solaris_2.6_5_98_HW.iso on /mnt

1. Create a lofi device:

# lofiadm -a /export/home/Solaris_2.6_5_98_HW.iso

2. Mount the iso image using the lofi device:

# mount -o ro -F hsfs /dev/lofi/1 /mnt