A CHD file acts like a physical disc. When you finish Disc 1, the emulator needs to swap to Disc 2.

If you are strictly using software emulation on a PC or phone, CHD is the perfect format. However, many enthusiasts still use original PS2 hardware (FMCB/FHDB) loaded with Open PS2 Loader (OPL).

Converting your library to CHD is primarily for and organization :

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