Linux Articles listed under "Boot ISO from USB"
Boot ISO Files directly from USB using Grub2 from Linux. Here is one way to create a Multiboot USB Flash Drive from a running Ubuntu (I used the Live CD). You may eventually need a large Flash Drive or USB Hard Drive in order to include every bootable ISO entry. I will add more Bootable ISO files to the grub.cfg file as I find time to test them. Contact me to submit working Bootable Linux ISO grub.cfg entries for inclusion.