Chdman May 2026

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

chdman createcd -i "Final Fantasy VII Disc 1.cue" -o "Final Fantasy VII Disc 1.chd" Use createcd with a GDI file. chdman

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 createcd -i input_file

chdman verify -i game.chd Older CHD versions (v1–v4) are less efficient than CHDv5 . Convert a v4 to v5: Convert a v4 to v5: | Emulator |

| Emulator | CHD Support | |----------|--------------| | MAME / MESS | ✅ Native | | RetroArch (MAME core) | ✅ | | DuckStation (PS1) | ✅ | | PCSX2 (PS2) | ✅ (since recent builds) | | Redream (Dreamcast) | ✅ | | AetherSX2 (Android PS2) | ✅ | | Flycast (Dreamcast/Naomi) | ✅ |

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 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: