Emulation is legal in most countries. Downloading BIOS is a civil (not criminal) matter in theory, but in practice, no individual user has ever been prosecuted for downloading a BIOS pack.
Some developers maintain "clean" BIOS sets on GitHub, often under repositories for RetroArch system files which are compatible with Batocera.
Troubleshoot why a isn't appearing in your menu.
Setting up Batocera is one of the most rewarding ways to experience retro gaming, but many users run into a common roadblock: the system doesn't include the necessary BIOS files due to copyright laws. Without a or a properly configured folder, advanced systems like PlayStation 2, Dreamcast, and Saturn simply won't boot.
To integrate these files into a Batocera build, they must be placed in a specific directory: /userdata/bios/ Batocera.linux - Wiki The BIOS Checking Utility
Batocera includes a built-in BIOS checker. After copying your files: