I have a MacBook Pro running OS X Lion (uses 100% of my Mac HD). I would like to play some Windows 7 games (e.g. Limbo, etc) but virtual machines are not good enough.
I wonder if it is possible to install Windows 7 in a USB stick (which minimal size?) and run from it, so that when the computer boots and detects the USB stick I can select between OS X and Windows 7, and more importantly, Windows 7 does not kill my OS X partition.