I have an older version of macbook, the black one running osx 10 which has served me great over the years except mysteriously stopped reading all disks. Then most recently taken a tumble off a chair onto the floor and tried to eject the whole disk drive causing that side to warp. Now I still am covered under the 3 year waranty but is this something apple will fix and if so how do I save my information before I send it in?