What are you using? (USB, Internal HDD, or SMB Network?) Are you setting this up for a PS2 console or an emulator ?
(Optional) Go to > CFG Upgrade to pull official genre, description, and player-count data down for your OPL theme menus. Best Practices for OPL Library Maintenance Opl Manager 21.7
Virtual Memory Card files that save physical space on your console. What are you using