Have you ever thought about how you can burn a bootable CD ? or even better a multi-OS bootable CD? have a look at this,just remember to follow the instructions carefully otherwise you will lose your CD :).
I was seeking for a good software to keep my secret (!) and critical data encrypted and archived properly,after spending some time searching in download sites I found BestCrypt, its a really cool utility it creates a virtual drive upon an encrypted file,you can mount/unmount your virtual encrypted drives whenever you want and use them exactly the same as your logical drives, to make a backup of your data you can easily backup a single file (which is basically your virtuall drive) on CD and mount it as a virtual drive from the CD whenever you need it. (ghofl shekanesh too dehkade jahani mojoode ba jostejoo too google peydash konid, che secure!!! :) )