Hey guy, I know this question has been asked many times by other people, but I'm still confused to how to install a Win 7 on my 2012 iMac. I don't have Thumb drive, but I do have a 60G external HDD via USB 2.0. Can someone please tell me in specific details how to install Win 7 on Mac. My OS X is 10.8.2 and I already downloaded a copy of Win 7 64bit professional from web. Thank you in advance.