The Nintendo 64DD was a failed add-on that used proprietary magnetic disks (not CDs, but similar in concept). Some homebrew tools and emulators (like N64DD Emulator) expect disk images. Converting certain Z64 dumps (specifically 64DD game dumps) to ISO-like structures can be necessary.
Despite the technical mismatch, legitimate use cases exist: z64 to iso
Some emulators (like older versions of Mupen64) can be tricked into loading a file if it has an .iso extension, provided the file is a raw dump. This is not a true conversion, but it works superficially. The Nintendo 64DD was a failed add-on that
Steps:
Success rate: Very low. Most emulators validate the file header and will reject it. Success rate: Very low
If you need to play a Z64 file on a device that only supports ISO files (like a modded PS2 or a CD-ROM drive), you are likely trying to use the wrong hardware. The correct solutions are: