Hi Guys, my mbp was full and so I transferred some files to external HD (A). During that time, I did a Time Machine back up on External HD (B). I left this overnight and my MBP's memory ran down to zero. I proceeded to remove external HD (A) and external HD (B) and restarted my mac. After that, I was able to smoothly and quickly back up Time Machine to my external HD (B). However, the 40 gigs of memory disappeared and now i'm left with 1 gig of space on my MBP. Please help!