.chd MAME compressed hard disk image
Programs & libraries
| MIME type | application/x-mame-chd |
|---|---|
| Description | MAME compressed hard disk image |
| Category | Programs & libraries |
| Signature (magic bytes) | 4D 43 6F 6D 70 72 48 44 (MComprHD) |
Frequently asked questions
What is a .chd file?
A .chd file is a “MAME compressed hard disk image” (MIME type application/x-mame-chd).
How do I open a .chd file?
This is executable code or a library. Only open such files from trusted sources; to inspect them, use tools such as file, objdump or a hex editor.
How can you tell a genuine .chd file?
By the bytes at the start of the file, the signature (magic bytes): 4D 43 6F 6D 70 72 48 44 (MComprHD). On Linux and macOS, file --mime-type example.chd checks the real type regardless of the extension.
Which MIME type belongs to .chd?
The MIME type is application/x-mame-chd. In the Apache web server: AddType application/x-mame-chd .chd; in nginx: types { application/x-mame-chd chd; }.