This is actually a feature of VMware Fusion for the Mac. Or at least it used to be. If you had a dual-boot system with Windows (Bootcamp) and Mac OS X, you co

This is actually a feature of VMware Fusion for the Mac. Or at least it used to be. If you had a dual-boot system with Windows (Bootcamp) and Mac OS X, you could run the Bootcamp partition under VMware Fusion for most things, and reboot into native Windows if necessary (for some games).