I just bought the new 21.5" mac and want to install Windows 8. My old laptop died and I want to use that Windows XP license and install it in Boot Camp then immediately install an upgrade to Windows 8 Pro. The problem I see (haven't tried it yet because I don't want to open the Windows 8 package if it can't be done) is that when I launch Boot Camp to setup it says you can only install Windows 7 or higher but it must be a full install disk and not an upgrade disk. Microsoft does not make a full install disk for Windows 8. From the verbiage in Boot Camp it also sounds like I won't be able to use my full version of XP and then apply my Windows 8 upgrade. Please tell me I'm missing something or do I really have to pay for a full retail version of Windows 7 Pro for $300 THEN apply my Win8 Pro upgrade? I also plan to install it onto Parallels afterward but need to resolve this in Boot Camp first. Thanks in advance for any feedback.