There's a lot of information out there on installing/booting Ubuntu on Intel Macs using a variety of tools: rEFIt, rEFInd, unetbootin, ISO-2-USB EFI-Booter, etc. I've tried a number of methods but I always get stuck at the same point. My 13.04 AMD64 Mac live USB thumb drive will not boot. My computer freezes at the following screen:
I also get some graphical artifacts in the form of two purple squares in the top left of the screen. Has anyone here found a bullet proof way to boot from a 13.04 Ubuntu live USB drive on a Mac?
Welcome to the << Ubuntu ISO - EFI Booter >> (vers. 0.01 beta)
OK, fasten your seat belts now, we are booting the kernel.
This may take a while, please be patient...