Let's say I have a system (I don't, at least for now) that has a dual or triple boot with OS X, Windows 7 and maybe Linux of one flavor or another. If I'm booted into the Mac, can I run the other Windows and/or Linux from it? Would I do that with Fusion or Parallels as if it were a VM, even though it's not? Or another way? I'm assuming this can be done, but maybe I shouldn't.