USBUtil 2.2 is a vintage but functional tool. For modern Wii homebrew, Wii Backup Manager is safer, faster, and more flexible.
: Converts standard PS2 ISO files into smaller "UL" segments. This is essential because USB drives must be formatted as FAT32 to be read by the PS2, and FAT32 does not support files larger than 4GB. usbutil 2.2 english
During the lifespan of the PlayStation 2, the ability to play games from a USB hard drive was a significant breakthrough. This allowed users to preserve their physical discs from wear and tear and reduce loading times. However, the official software provided by peripheral manufacturers was often limiting. USBUtil 2