Howto mount an ISO image in AIX

First Create a filesystem with crfs command:

#/usr/sbin/crfs -v jfs -g rootvg -a size=800 -m/cd1iso -Ano -pro -tno -a frag=4096 -a nbpi=4096 -a ag=8

This command creates the /cd1iso file system on the rootvg volume group.

Now dd the "iso" image into rlv00
# dd if=image.iso of=/dev/rlv00 bs=10M

Use chfs to change the attributes of a file system:
# chfs -a vfs=cdrom cd1iso
# mount /cd1iso
# cd /cd1iso

When done, remove the filesystem/unmount, enter:
# rmfs /cd1iso

This removes the /cd1iso file system, its entry in the /etc/filesystems (created using chfs command) file, and the underlying logical volume.