Use Free DVD Boot (burned to a DVD-R) or a pre-modded memory card to launch the FMCB Installer through uLaunchELF .
Follow the on-screen instructions to install Free McBoot onto your PS2 memory card. Playing Games from USB: Mcboot Download Usb
For formatting USB drives larger than 32GB to FAT32. General Installation Steps: Use Free DVD Boot (burned to a DVD-R)