In order to reformat a PS2 memory card ,you should eliminate the whole PS2 game disks and other memory devices from the PlayStation 2. Put the PS2 memory card in the first memory slot and turn on the PS2 device. A loading screen will appear and then system settings menu is shown. Enter “System Configuration” and then the “Memory Settings” subscreen. Select the first memory card and select “Format” from the accessible multiple choices. Wait till the card's format is finished. The memory card is now formated and ready to be used .