I would like to know if it is possible to boot and run Windows 7 off of an external hard drive. I have looked around a little, and it seems that I need to format a hard drive to make it able to boot right. Is this right? And how should I go about formatting it? Also, should I use bootcamp to boot it off of the external, if it is even possible? If not, what should I use? I am looking to be able to use both Windows and Mac (not at the same time), and I thought this would be a way to accomplish that.