GD-ROM Dumping Guide

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Revision as of 03:50, 19 February 2026

GD-ROM dumping guide. See here for information about dumping GD-R (recordable) discs.

GD discs were used by the Sega Dreamcast console and Sega NAOMI, Sega NAOMI 2, Sega Chihiro, and Triforce arcade systems.

The discs contain two distinct areas, a Low Density Area ("LD Area") and a High Density Area ("HD Area"), physically separated by a ring. You'll need to dump both areas of the disc, each requiring different drive models and methods.

LD Area

Tools

• CD-ROM compatible drive
• Windows, Linux, or macOS computer
• MPF application (includes Redumper)

Dumping

The LD Area is formatted like a standard CD-ROM, so should be dumped using the standard Disc Dumping Guide (MPF). The CD-ROM profile should be selected in MPF.

HD Area

Tools

• [Optical Disc Drive Compatibility: GD-ROM|GD-ROM compatible disc drive]]
• Windows or Linux computer
• dreamdump app

Dumping

• Open command line interface app
• cd (change directory) to the location of the dreamdump app.
• Dump with the following command: dreamdump disc --drive="[drive letter]" --image-name=""