Hello, I have a unibody MacBook running 10.6.1, though I'm not entirely sure the second part is relevant. The issue is that I can't, for the life of me, figure out how to get my MacBook to start a flash drive version of Ubuntu 9.04. I know that the image I've made is bootable because it runs fine on my older Compaq notebook. The issue is that the Mac boot menu refuses to find the flash drive when I restart with it plugged in. Is there a button I need to be holding down besides option that I'm not doing at the moment? Or is my mac simply not compatible with USB-boot without installation of an outside bootloader?