Instructions
Power on the PlayStation 2 without a game disc and insert the memory card into one of the available slots on the system.
Choose "Browser" on the main menu of the PlayStation 2. The memory card appears on the screen. Select the memory card.
The PS2 will recognize that the memory card is not formatted and will ask whether you want to do so. Select "Yes" to format the card.
Exit out of the menu screen, and the memory card is now ready for use.