Japanese PSX discs are physically identical to US discs (CD-ROM), but they may have copy protection like LibCrypt (less common in Japan) or anti-modchip triggers. Use ImgBurn in "Read" mode to create a .bin and .cue file. Ensure you select "Advanced" -> "Output to BIN."
Japan saw over 3,000 PSX releases. Many are rare, multi-disc RPGs (like Final Fantasy VII International or Tales of Phantasia ) or oddities (like Doko Demo Issyo or LSD: Dream Emulator ). CHD helps pack more of these onto a handheld device (Anbernic, Miyoo, Steam Deck) or a NAS-driven ROM collection. Psx Chd Japan