Have you ever tried mounting an .iso image? You need 3rd party software, you need to most likely reboot since it installs a driver, and you get a huge memory footprint compared to the task at hand. I just found a way to mount an .iso image using a 23K program, with a 9K sys file driver
How to mount an image without any software - Hack Your Day
How to mount an image without any software - Hack Your Day