I have a portable HDD that stores a OSX partition. I boot from this partition using a range of Mac machines (choosing "Start Up Disk" in Preferences). However, I may need to run that partition via VMWare Fusion, so that I have two OSX running at the same time on the same machine (one native to the machine, one via VMWare). How do I set VMWare up to do this? Or can Parallels do what I need?