I run Windows 8, Windows 7, Ubuntu and OS X on my MacPro Desktop quad core Xeon. Each OS on a separate 1 TB drive so no problems. Apple really has a better concept of what a PC is supposed to be like then Microsoft. I see this Windows 8 like forcing everyone to only one standard, more bad then good. A menu for what type of device the OS is on should exist for Windows 8 Or better would be to just dump the Metro as it sucks. Who ever thought of 2 desktops should be fired, wait they did that!