0 is available to all software users as a free download for Windows 10 PCs but also without a hitch on Windows 7 and Windows 8. All you have to do is execute the installer and follow the onscreen instructions and it will do all the process automatically in the background and transform your Windows 7 to Mac OS X Lion.ħ screensavers but continue with Windows 7 Wallpapers Now you can download Mac OS X 10. Moreover, make sure that UAC (User Account Control) is disabled Mac OS X Lion Skin for Windows 7 4. But as Mac OS X 10 7 Lion is coming this June with tons of new features and Snow Leopard becomes a thing of the past, we now bring you the Mac OS X 10.