Want to try Ubuntu Linux but don’t have a spare computer to install it on, or even the know-how to install multiple OSes on a single computer? Try running Portable Ubuntu off your flash drive instead. In this case, you end up running Ubuntu just as you would any other Windows application and then, within that, you have the ability to run any program within Ubuntu as if you’d installed it as a full OS. There couldn’t be an easier way to give this great free OS a try.