Things You'll Need
Instructions
Turn on your Sony PS2 and remove any game that is inside the disk tray by pressing the eject button and pulling the disk out.
Insert a retail PS1 game disk and a disk icon appears on the PS2 menu.
Stick the slide tool into the space between the PS2 and the bottom of the PS2 disk tray. Slide the tool to the right and pull the disk tray out.
Pull the retail PS1 game out of the PS2 disk tray and place the PS1 backup game into the PS2 disk tray. Push the PS2 disk in. Do not press the "Eject" button to push the tray in; use your fingers.
Insert the slide tool again and slide it to the left to lock the PS2 disk tray.
Select the disk icon on the PS2 main menu to boot the PS1 backup game on the Sony PS2.