GD-ROM Dumping Guide: Difference between revisions

Revision as of 03:48, 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, 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

An optical drive listed in Optical Disc Drive Compatibility: CD
A 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) with a CD-ROM compatible drive. The CD-ROM profile should be selected in MPF.

HD Area

Tools:

An optical drive listed in Optical Disc Drive Compatibility: GD-ROM
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=""

@@ Line 6: / Line 6: @@
 ==LD Area==
-'''Tools:'''
+'''Tools'''
 * An optical drive listed in [[Optical Disc Drive Compatibility: CD]]
 * A Windows, Linux, or macOS computer
 * [https://github.com/SabreTools/MPF/releases MPF application] (includes Redumper)
-'''Dumping:'''
+'''Dumping'''
 The LD Area is formatted like a standard CD-ROM, so should be dumped using the standard [[Disc Dumping Guide (MPF)]] with a CD-ROM compatible drive. The CD-ROM profile should be selected in MPF.