Been searching for an answer on this but can't find anybody with the same drive that my iMac arrived with. I have a mid 27" iMac ( 11,3 ) that came factory fitted with a Samsung 1Tb HD103SJ If I were to replace this myself can I just put in a larger 2Tb Sammy. All the references on the net just give advice on Seagate, WD & Hitachi but a quite a few iMacs were also shipped with Samsung. So many in fact that Apple actually issued a HDD firmware update for the drive. All the photos on the net describing the thermal sensor cable for each drive manufacturer just list Seagate, WD & Hitachi. Anybody done this?