ok so i have a mac mini running snow leopard running 10.6.4... with a 120GB HD and i am planning on getting this external hard drive: http://www.amazon.com/Iomega-Prestige-Desktop-External-34919/dp/B003GALRIA/ref=dp_ob_title_ce is there a way to make this my main hard drive or boot from it? i need more space for my itunes media(movies/tv shows) and i dont want it to work like a flash drive because then it wont be in my library... among other things.... also, if i do make it my main/boot hard drive, what will happen to the one inside the mac mini? the 120GB one, will it just be gone?(which i would be ok with). if it is still there could i use it to bootcamp windows?