I have to agree with everyone. Installing an additional HD is a piece of cake. All you have to do is discharge static electricity, flip the latch on the back, pull the side case off, then pull out an HD tray, slap the new HD on, screw on the 4 screws, slid it back in, close the case, turn the MP back on and format the HD. Those steps take maybe 2-3 min at max.