Chdman [patched] May 2026

Open a terminal in that folder.

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

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

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: Storing raw, uncompressed

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.chd -o extracted.cue For hard drives: