If you have searched for the phrase , you are likely confused by the differences between USB, SMB, and HDD setups, or how to get the correct boot files onto your memory card.

You cannot move files without this. Download uLaunchELF v4.42d (or later). This is your file explorer for the PS2 file system.

Move your renamed BOOT.ELF into the BOOT folder on your USB. 3. Installing to Memory Card (DEV1 Mode) Open PS2 Loader (OPL) - ConsoleMods Wiki

OPL_Distribution/ ├── COVER_ART/ ├── CFG_OLD/ ├── VMC/ ├── THM_OLD/ └── OPL.elf

: This is your file manager. You can get it as an ISO to burn to a disc or as an ELF file. OPL Manager

: The definitive application for loading game images (ISOs) without using the console’s optical laser. uLaunchELF

You don't just copy the ELF; you need the folders. Download the "OPL Distribution Pack" from PS2-Home.com (Mirror). Inside the zip, you will find: