The PlayStation 2 was released in 2000 to tremendous sales and has remained popular longer than any other system of its generation, thanks to an enormous and varied game library. Users have a number of reasons to want to transfer their saved games to a USB-based memory stick, including portability and the ability transfer the saves to a PC. Once on a PC, saves can be modified or shared with friends from across the world. Doing so requires a little bit of manipulation with a program called CodeBreaker.
Purchase CodeBreaker for PS2. This program comes on a disc that allows users to enable cheats and modifications on their games, but also includes an option called "Device Manager" that allows you to manipulate your saved games more than the PlayStation 2 normally does.
Make sure the memory card with the save you want and the USB stick you want to transfer it to are inserted into the system, then put the CodeBreakers disc in the tray. Select "Device Manager" from the main menu after the loading screen. This will take you to a new screen with "Select Source Device" written at the top.
Select the icon with the correct memory card in it. The PlayStation 2 can hold two memory cards at once, so make sure you've selected the correct slot. Hit the "X" button.
Scroll up and down until you've found the save-file you wish to transfer. Hit the "X" button to select it, and then the "Triangle" button to access your options of what to do with it.
Choose to "Copy" by highlighting that option and hitting the "X" button. This will take you to a screen asking that you "Select Destination Device." Choose the USB stick (it's the diagonal rectangular option) and hit "X". CodeBreaker will then transfer the saved game from the memory card to the USB stick.