Go to www.ultimatebootcd.com and download that cd. It provides you with all kinds of choices to do what you want. The website also provides a lot of information on booting different operating systems from a single device. One main consideration is that moving a usb drive from one computer to another means that the root directory can change depending on what drives the booting computer has so whatever operating systems you use have to be set up to accept any root device. Knoppix handles that just fine.