chdman createhd -i input.raw -o output.chd -s source_size_in_bytes (Modern MAME often auto-detects size, but you may need -s for raw dumps.) Useful for modding or verifying:

chdman createcd -i input_file.cue -o output_file.chd

For decades, MAME (Multiple Arcade Machine Emulator) focused on arcade PCBs. However, as the project evolved into a comprehensive emulation umbrella for computers, consoles, and arcade machines, a new problem emerged: hard drive images, CD-ROMs, and laser discs .

chdman extractcd -i game.chd -o extracted.cue For hard drives: