I have a cd copy of ubuntu that works fine but is really slow. I installed to a usb drive multiple times and keep running into the same problem: The flash drive shows up as "Legacy OS" in rEFIT and boots into my windows partition when I select it. It doesnt show up when I hold alt/option on startup. It also doesnt show up in the startup disc menu in system preferences even though its on the desktop. I have used different usb drives and, like I said, have installed it multiple times. Every site I have gone to uses the same installation method (using ubuntu from a cd) and I dont understand why it wont work. I have posted this probably in other sections and no one ever responds so Im hoping this will change. HELP!!!!!!!!! Thanks.