To actually run the games on your console, you need a way to boot the USB Extreme client:
USB Extreme works by formatting your USB drive into a specialized format and "ripping" games from a physical disc or ISO image into that format. Download Usb Extreme Ps2 Slim
USB Extreme is a legacy tool that allows PlayStation 2 (PS2) owners to run games from an external USB storage device, such as a hard drive or thumb drive. While it was revolutionary for its time, it is largely considered obsolete today, replaced by more advanced homebrew solutions like Open PS2 Loader (OPL) . To actually run the games on your console,
The drive must be a Master Boot Record (MBR) disk, not GPT. The drive must be a Master Boot Record (MBR) disk, not GPT
In the "Games Installer" tab, select the media type (CD or DVD), choose your USB drive letter, give the game a name, and click "Start".