===How to create a Live USB with personal files easily and safely usable by Ubuntu, Windows XP, …=== I’ll do it with this example: 32-bit computer (desktop -or laptop-, not netbook) USB flash drive of 4 GB Persistence option desired (casper-rw file will exist for that) Personal files will take up more than half of the memory or space 1. Download the required ISO file: http://www.ubuntu.com/desktop