How to flash AT&T UNIX to cd, floppy or (preferably) USB?

Preferably USB as it would be easier to carry arround and install on other systems I have never used Unix. My first PC was a windows XP laptop when I was about 8 years old. i have installed Linux, DOS, Windows 95 and a lot of other things. Unfortunately I cannot find any information on flashing Unix to a USB or the order of flashing it to a CD or floppy disk. Is there anyone who knows how one would achieve this? I have a wide range of old hardware that sounds perfect for a Unix cluster of some kind but can't find any info on how to flash Unix to some installation media.