Hey guys, I know mixing HDD's from other comps won't work (dell to HP etc etc) but I was wondering if switching the HD into the same spec computer will work. Looking to put my momentus XT from my 2011 13" macbook pro into another 2011 13" macbook pro. Same specs. Will the hard drive work fine or do I have to restore and reformat all over again. Just asking cause I have alot of data already on the hard drive and don't want to go through the trouble of installing and copying music again.