chdman extractcd -i game.chd -o extracted.cue For hard drives:
chdman extracthd -i harddrive.chd -o extracted.raw Checks the internal hashes without extracting: chdman
Storing raw, uncompressed disc images (like BIN/CUE, ISO, or GDI) for PlayStation, Sega Saturn, or arcade hard drives consumes terabytes of space. Enter (Compressed Hunks of Data MANager). What is CHDMAN? CHDMAN is a command-line tool bundled with MAME. It converts raw disk images into the CHD (Compressed Hunks of Data) format. This format applies lossless compression to disc sectors, often reducing file sizes by 40–60% without losing any data. chdman extractcd -i game
Create CD CHD: chdman createcd -i image.cue -o output.chd Extract CD CHD: chdman extractcd -i image.chd -o output.cue Create HD CHD: chdman createhd -i drive.raw -o drive.chd Verify CHD: chdman verify -i image.chd Run chdman with no arguments to see the full command list. CHDMAN is a command-line tool bundled with MAME