I just ordered a Macbook and I'm interested in dual booting my system but I was curious about how I might be able to do this with an external harddrive. I'll have an 80GB harddrive to work with but I'll most likely only use Windows 10% of the time (if that). What's the smallest partition for windows you can create AND if you have an external harddrive connected could you simply dump files to it from the windows side and open them on the mac side? Also, would it be possible to store and run apps on the windows side from the external drive? Thanks!