Chdman May 2026

chdman createcd -i "game.gdi" -o "game.chd" For arcade hard drives (CHD v1/v2/v3) or PC hard disk images:

Open a terminal in that folder.

chdman copy -i old_v4.chd -o new_v5.chd -c zstd (zstd = Zstandard compression; others: lzma, flac, huffman) Assume you have a folder of BIN/CUE PS1 games. chdman

chdman extracthd -i harddrive.chd -o extracted.raw Checks the internal hashes without extracting: chdman createcd -i "game