I have a 15' late 2011 MacBook Pro with OS X 10.7.5 and already have a boot camp partition with Windows 7 installed on it. I'd like to do a fresh install of Windows 8 Pro. I have the Windows 8 Pro installation iso and prepared a bootable usb drive. If I run boot camp assistant (Version 4.0.4 (437)), the only option it gives me is to 'Remove Windows 7' which in the next step explains that it will remove the Windows partition. I can go with the boot camp assistant and remove the partition and re-create it and install Windows 8, but I was just wondering if I could just boot into Windows 7 and use the usb drive to install Windows 8 and then install the Apple support files, and everything works as it is now (dual booting to OSX and Windows) ?