First off let state I've never had this issue until the optibay. I have the following: MBP 15" i7 2010 128gb ssd 500 gb (bootcamp/user home dir) Optibay USB case for orig SuperDrive So here is my problem, i can't install windows 7 64bit to save my life. I've tried the following: - typical DVD based install, however when it boots to install via DVD I keep getting the apple boot logo flash back and forth with a circle with line through it logo. Not sure why, since it's the original SuperDrive attached via USB. - tried refit with USB DVD, still no luck. Receive legacy USB errors. - tried refit with USB windows 7 flash install. Receive legacy USB errors. So has anyone had any luck with the optibay USB case with the original SuperDrive? Do I need another USB DVD drive that will work just fine? Anyone have any written procedure that doesn't involve virtual machine software to just install the os?