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| - | This is a step-by-step guide designed to be easy to follow so that you can make reproducible, good dumps of your GDs to the Redump standard.
| + | '''GD-ROM''' dumping guide. See [[GD-R Dumping Guide|here]] for information about dumping GD-R (recordable) discs. |
| | | | |
| - | ==What are GDs?==
| + | GD discs were used by the Sega Dreamcast console and Sega NAOMI, Sega NAOMI 2, Sega Chihiro, and Triforce arcade systems. |
| - | GDs—or Gigadiscs—are the type of [[wikipedia:Optical disc|optical media]] used by the [[wikipedia:Dreamcast|Sega Dreamcast]] as well as the [https://segaretro.org/Sega_NAOMI Sega NAOMI], [https://segaretro.org/Sega_NAOMI_2 Sega NAOMI 2], [https://segaretro.org/Sega_Chihiro Sega Chihiro] and [https://segaretro.org/Triforce Triforce] arcade systems. It is special compared to its relative—the CD—in that it contains both a low density (LD) and a high density (HD) area. To get a good dump, you need to extract them both from the disc.
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| - | If you have any of the officially released discs for the Dreamcast or any of the above mentioned arcade systems, you are pretty much guaranteed to have a GD. The Dreamcast did however support loading of [[wikipedia:MIL-CD|MIL-CDs]], which lead to a number of unlicensed software being pressed on regular CDs. Check for the GD-ROM logo on the disc or check the reflective side of the disc for a visible LD–HD divide if you are unsure.
| + | The discs contain two distinct areas, a Low Density Area ("LD Area") and a High Density Area ("HD Area"), physically separated by a [https://en.wikipedia.org/wiki/GD-ROM#/media/File:Gdrom.jpg ring]. You'll need to dump both areas of the disc, each requiring different drive models and methods. |
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| - | ==Tools== | + | ==LD Area== |
| - | First you need to make sure you have the necessary equipment. To dump a GD you need:
| + | '''Tools''' |
| | + | * [[Optical Disc Drive Compatibility: CD|CD-ROM compatible disc drive]] |
| | + | * Windows, Linux, or macOS computer |
| | + | * [https://github.com/SabreTools/MPF/releases MPF application] (includes Redumper) |
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| - | * A Windows PC
| + | '''Dumping''' |
| - | * [[DiscImageCreator: Optical Disc Drive Compatibility#GD-Rom|Compatible drive(s)]]
| + | |
| - | * [https://github.com/saramibreak/DiscImageCreator/releases DiscImageCreator app]
| + | |
| - | * Download [https://archive.org/download/VGPCGDRomDumpingKit_201811/VGPC%20GD-Rom%20Dumping%20Kit.7z VGPC GD-Rom Dumping Kit] (audio trap disc image, dcdumper, ice, startstop)
| + | |
| - | * A CD-R to create and Audio Trap Disc.
| + | |
| | | | |
| - | ==Burning an Audio Trap Disc==
| + | 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. |
| - | You'll need an Audio Trap Disc for the HD Area dumping process as it tricks your drive into reading into that part of the disc.
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| - | The Audio Trap Disc image is included with the VGPC GD-Rom Dumping Kit. Because the image intentionally has errors, many programs won’t burn it properly. We’ve found that CloneCD can reliably burn it properly:
| + | ==HD Area== |
| - | * Open Clone CD and click on “Write from ImageFile”.
| + | '''Tools''' |
| - | * Click on “Browse” and navigate to where you extracted the VGPC GD-Rom Dumping Kit, and select “TOC122A.CCD”. | + | * [[Optical Disc Drive Compatibility: GD-ROM|GD-ROM compatible disc drive]] |
| - | * Then, select the drive with the blank CD-R(W) inside. Click on the “Protected PC Game” profile. The write speed doesn’t matter much since this is such a small image. Still, you should probably avoid setting it too fast or too slow. Somewhere between 4x and 24x should be good, so set it to 8x if you don’t want to overthink. | + | * Windows or Linux computer |
| | + | * [https://github.com/MoriGM/dreamdump/releases dreamdump app] |
| | | | |
| - | ==Dumping the LD Area==
| + | '''Dumping''' |
| - | The LD Area should be dumped with DICUI using this guide: [[Disc Dumping Guide (DICUI)]].
| + | * Open command line interface app |
| - | | + | * cd (change directory) to the location of the dreamdump app. |
| - | The LD Area is a standard CD-Rom, so it will be the only data to appear when mounted in a computer.
| + | * Dump with the following command: dreamdump disc --drive="[drive letter]" --image-name="" |
| - | | + | |
| - | ==Dumping the HD Area==
| + | |
| - | To dump the HD Area of the GD-Rom, the swap disc method is used. To do this you will have to remove the four bottom screws of your drive and faceplate. Afterwards, set the top back onto the drive. It will be removed after the startstop step.
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| - | | + | |
| - | * Insert the audio Trap Disc to an HD Area [[DiscImageCreator:_Optical_Disc_Drive_Compatibility#GD-Rom|compatible drive]]. | + | |
| - | * Run '''startstop.exe [driveletter] 1'''
| + | |
| - | * Remove the top off the drive
| + | |
| - | * insert the gdrom and gently push the tray back (or put the drive cover back on).
| + | |
| - | * Run '''dcdumper [drive letter] -c446261 -df -ft -t0 -p20'''
| + | |
| - | * It will take several "PASS"es to get all matches, this is fine.
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| - | | + | |
| - | ==Submitting your dump info==
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| | [[Category:Dumping Guides]] | | [[Category:Dumping Guides]] |
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.
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.
