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+# chdman
+
+> Manage and convert CHD (Compressed Hunks of Data) images.
+> Commonly used with MAME and retro game images.
+> More information: <https://docs.mamedev.org/tools/chdman.html>.
+
+- Create a CHD from a BIN/CUE pair (CD-ROM image):
+
+`chdman createcd {{[-i|--input]}} {{path/to/file.cue}} {{[-o|--output]}} {{path/to/file.chd}}`
+
+- Create a CHD from a raw hard drive image:
+
+`chdman createhd {{[-i|--input]}} {{path/to/disk.img}} {{[-o|--output]}} {{path/to/disk.chd}}`
+
+- Extract (decompress) a CHD back to BIN/CUE:
+
+`chdman extractcd {{[-i|--input]}} {{path/to/file.chd}} {{[-o|--output]}} {{path/to/file.cue}}`
+
+- Verify integrity of CHD file:
+
+`chdman verify {{[-i|--input]}} {{path/to/file.chd}}`
+
+- View CHD metadata information:
+
+`chdman info {{[-i|--input]}} {{path/to/file.chd}}`
+
+- Update a CHD file to the latest format version:
+
+`chdman copy {{[-i|--input]}} {{path/to/old_file.chd}} {{[-o|--output]}} {{path/to/new_file.chd}}`
+
+- Convert a compressed hard drive image to uncompressed (for editing):
+
+`chdman extracthd {{[-i|--input]}} {{path/to/disk.chd}} {{[-o|--output]}} {{path/to/disk.img}}`