Hi, I set my mind to clean reinstall os x near future, and I need to ask few questions before I mak my final decision! I've been using mba for quite sometime and have all the itunes purchased musics, movies, rented movies podcasts iphone files etc. Is there better way to back up all these files rather just copy whole computer with time machine? If not, I will be getting a external hard drive that will serve as back up hd for Time Machine just in case. Any recommendation for hd? it doesn't have to be big just small size , no ac adapter ! Also, I want my iphone to work as same way it was after reinstall of os. Thank you so much !!