How to Replace the Hard Disk Drive Before you begin: Remove the base enclosure and battery. Removal Disconnect the hard disk drive cable from the system board and unroute it from its routing channel beside the drive. Remove the two P1 Phillips-head screws that secure the hard disk drive to the top cover. Grasp the mylar tab on top of the hard disk drive assembly to lift it off of its alignment pins and remove it. While holding the hard disk drive assembly firmly, grasp the hard disk drive cable connector and tug it out of the drive. Remove the two P1 Phillips-head retaining screws from one side of the hard disk drive assembly that secure it to the hard disk drive. Remove the two P1 Phillips-head retaining screws from the other side of the hard disk drive assembly that secure it to the hard disk drive. Remove the hard disk drive assembly. Remove the hard disk drive. Replacement Align the hard disk drive assembly with both sides of the new hard disk drive. Replace the two P1 Phillips-head retaining screws on one side of the hard disk drive assembly that secure it to the hard disk drive. Replace the two P1 Phillips-head retaining screws on the other side of the hard disk drive assembly that secure it to the hard disk drive. Connect the hard disk drive connector cable to the drive. Place the hard disk drive assembly onto its alignment pins on the top cover. Replace the two P1 Phillips-head screws that secure the hard disk drive assembly to the top cover. Route the hard disk drive cable into its routing channel beside the drive and connect it to the system board.