I've got a MacBook Pro with an aftermarket SSD. The original HDD is in the optical bay. The SuperDrive is in an external enclosure, which I can't boot from. I don't want to install Windows 7 to the SSD as space is limited and I won't use it that much. Every online tutorial about rEFIt and dd'ing the Win7 DVD onto a USB leaves me with a blank black screen at boot (after choosing boot from DVD from any menu). Yes, it's a legit copy of Win7. Some further googling seems to imply that Win7 needs EFI 2.0 and macs don't have that.(?) If I pull the SSD out, move the drives around, put the hdd back in it's place and the dvd back in it's place then I won't have an install of OS X anywhere if that's needed, and honestly, I'm not sure it's worth taking everything apart again. So, anyone done this? Got any hints about how to get it to boot from a USB or the OptiBay DVD drive?