The primary purpose of USBUtil is to convert and "split" large PS2 ISO files into smaller 1GB chunks. Since the PS2 hardware can only read USB drives formatted in FAT32, any game larger than 4GB (common for DVD9 titles) cannot be copied directly. USBUtil bypasses this by:
Breaking down large files into a series of ul.xxxx files that OPL can reconstruct and read seamlessly.
Originally developed in Spanish, the "Full English" versions are widely available on community archives like Internet Archive . How to Use USBUtil for PS2 Games
Users can select an ISO from their PC and have it converted directly to the root of their USB drive.
To get started, you will need a FAT32-formatted USB drive and your game ISOs:
