To use the file system with your PS2 Matrix OPL, you'll need a USB device formatted with a compatible file system. Here's how to prepare your USB device:
To get this system running, the process generally looks like this:
For USB and MX4SIO, the drive must be formatted to FAT32 to be recognized by OPL. download file system ps2 matrix opl
Complete Guide: Downloading and Setting Up the PS2 OPL File System for Matrix Modbo Chips
Plug the USB into the PS2.
To access the configuration menu, power on your PS2 and simultaneously until the "Infinity" logo appears.
This section synthesizes the above into a practical workflow. To use the file system with your PS2
USB 1.1 on PS2 is slow. Consider using an internal HDD (Fat PS2) or MX4SIO (Slim PS2) for better speeds.