GDEMU is an SD card based replacement for the optical drive in Dreamcast console.
Rhea is an SD card based replacement for the optical drive in Saturn console.

GD-ROM / CD-ROM drives inevitably wear out and fail – as do all mechanical devices – and since the console is no longer being manufactured it’s nearly impossible to source spare parts. This project was meant to provide a “once and for all” solution, since it doesn’t have any moving parts.


  • 100% compatibility with existing software
  • No need for custom BIOS or other modifications
  • Full support for CD Digital Audio
  • Considerably faster loading times

Please note: GDEMU does not endorse software piracy. It is end user’s responsibility to ensure the device is used in a lawful manner.

The project was started in 2008 as purely hobbyist endeavour, and was kept private for a long time. A few prototype units were made and the last ones received praise from the testers, so I have decided to make it more public by selling some in hope to raise money for hardware and software upgrades I need. This is still, however, just my old hobby project and not a business venture.

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