I am a computer science major and needed my computer fixed quickly. I support local business and brought it in to the Mac Guy. He said he would call me in 2 days, I didn't hear from him for 5!!! He said that the hard drive was bad and we discussed options. I can do this type of thing myself, but since he had it I opted to let him do it. He put in the drive and told me that (after 2 more days) he could NOT get my documents to migrate. I told him to put a fresh install of OSX on it and I would come and get it. I picked it up, only to find that the problem stil existed. I took it to the genius bar and we found that the sata 3 cable was the problem, not the hard drive. I FIXED IT MYSELF, putting in all new components and cable. I put in a terabyte high speed in the optical, a OWC 240gb ssd in the main drive bay(after replacing the cable), and it works great...including the old drive (the 'bad' one) when I connect it via usb cradle. For someone who 'knows' mac, he sure fell short on this one!!! GO TO THE GENIUS BAR INSTEAD and save yourself what happened to me.
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