I have an early 2011 MBP with a 320GB hard drive that I want to swap out myself for a larger one. I've read nothing but conflicting things online about whether or not this will void my Applecare warranty (which would SUCK). I even called Apple a minute ago and the guy gave me the most convoluted answer ever. First he said yes, it would void my warranty. But then he went on to say something about if I ever sent in my MBP for repairs with an aftermarket HDD in it that they'd replace it with a factory HDD (the one it originally shipped with), charge me for the HDD and send it back to me. I don't even see how that would be legal for them to take my HDD! But he said they must return all repaired items in "warrantable condition." Okayyy, but why would they repair my MBP and tear out the HDD if the warranty was voided?? Makes no sense. So WTF? I'm sitting here with a brand new 750GB HDD and a screwdriver in my hand wondering whether I'm allowed to do this or not.