Things You'll Need
Instructions
Turn off your Sony PS2 Slim and remove the expansion cover from the rear of the PS2. This can be done by simply undoing the screws with a Phillips-head screwdriver.
Insert the 3.5-inch hard drive into the expansion bay and place the cover back onto the expansion bay. Turn the PS2 Slim back on and insert the HDLoader disk into the PS2 optical disk drive. HDLoader will start up automatically.
Select "Install" from the main menu and the drive will eject the HDLoader disk. Insert the game disk that you want to install onto the PS2 hard drive. The game will automatically be installed onto the hard drive.
Remove the game disk when the process completes and reinsert the HDLoader disk. Select "Play" from the main menu and select the game you just installed from the list that appears. Your game will start.