You cannot convert a raw .bin file to CHD directly for PS1 games; you use the .cue file. If you downloaded a ROM set that only has a .bin file, you need to create a .cue file.
Ensure your matching .sbi files remain in the same folder. RetroArch cores will read the sub-channel files alongside the M3U structure to prevent the game from locking up. Troubleshooting Common Errors
The specialized nature of the Disc 1CHD Work release makes it a rare and interesting piece of gaming history, worthy of preservation and study.
Metal Gear Solid (Spain) (Disc 1).chd Metal Gear Solid (Spain) (Disc 2).chd Use code with caution. Save the file as Metal Gear Solid (Spain).m3u .
Move the Metal Gear Solid (Spain).m3u file into the root of your psx folder, right alongside your game folder—.
: The source copy used a single-bin format without indexing the Redump audio tracks inside the CUE file.