It's also a good idea to remove the rear plastic I/O panel (with the two protruding release tabs). That way, you can stand the computer on its end, without breaking them off. With the computer in an upright position, you'll be able to see the release tabs under the overhanging front bezel. Pry upward on each tab a little at a time, and as you alternate from side to side, the cover will come free. The hard drive is situated on the right, behind a metal cover that's secured with one phillips machine screw. You need to disconnect the data ribbon cable and power cable, then pull up on the drive sled's release tab. The drive can then be slid straight out the front. If you're donating the computer for someone's future use, remove the hard drive from the sled and slide the sled back into the chassis. Replace the metal drive cover and be sure to align the top interlocking edge of the front bezel, before you tilt it down to snap-lock into place.