My MacBook Air only has a 128Gb HD so I have a 500Gb external HD which I have my iTunes folder on (as I have over 200Gb of music and videos). But I would like to also use the external `hard drive for Time Machine. Will that work?
Will it use up all the remaining space, leaving me no room to add new media?
Should I (and can I) partition the external hard drive without losing my files?