Just a few useful notice before you even start to install it: If you had a beta Windows 7 (i.e. build number <7100) you will have to erase it and downgrade to Vista before installing the RC version If you currently have a Vista installed, you can run the .iso inside vista. but it up somehow and my whole harddisk went crazy. i had to format my harddisk (including mac partition) and restore both OS. my advice? back up your vista using easy file transfer. erase windows partition in boot camp assistant re-create a new partition, run boot camp assistant, but click "start windows installer" with your win 7 disc inserted p.s. if your vista is a pirate copy that you somehow got it actively illegally, and you run windows 7 installer within Vista, it will shut you out of the OS unless you activate it again- but this time with immediate online validation. MacDrive on x64 W7 i dont know about x86, but on x64 version, the latest 7.2.6 will not work, but instead 7.2.5 (and only 7.2.5) will work perfectly. W7 can run installer in compatibility mode so no worries. People should be expecting W7 x64 + bootcamp and drivers will take up about 17Gb of harddisk space.