Has anyone had success imaging ubuntu from/to a first generation intel imac? The computer I'm cloning from works perfectly but when I take an image of it and then clone another intel iMac the former tries to boot and then just constantly writes 'grub' to the screen! I have tried using the -ib -nolilo -fmbr switches with no success. I'm sure this has something to do with using MBR over GPT  but I just don't know how to solve it. HELP!