well here is the catch, if i use it a home its not a problem, but sometimes i take just the laptop, if i add music or pics, when its not attatched to the external, and i bring it back home how do i sync apeture and itunes libraries, because i want everything in one place, do i just do consolidated again, or do i have to manually do it? or will it do it automatically, because the settings are pointing toward the external anyway, if you get what i'm saying, how do you think it will play out. does it change where it points to if i unplug the external, back to the original settings?