Assumptions: you have a PC with an optical drive that can read CDs, and the disc is legally owned.
The Steam Deck has limited NVMe space. A 1TB SD card is expensive. By converting your library to CHD, you can fit 300+ Saturn games on a 512GB card instead of just 120. For Android devices like the Ayn Odin or Retroid Pocket 4, CHD reduces thermal load and read speeds. sega saturn roms chd
No essay on ROMs is complete without addressing legality. CHD files, like all ROMs, exist in a gray area. Downloading commercial Saturn games you do not own is copyright infringement in most jurisdictions. However, creating CHD files from your own original discs for personal backup and emulation is generally considered fair use (within the U.S. under the DMCA’s archival exemptions). The CHD format itself is neutral—it is a tool. Its value lies in preserving a fragile medium (CD-Rs rot over time) and making history playable. Responsible preservationists advocate for owning physical copies and ripping them to CHD for daily use, saving the original discs from wear. Assumptions: you have a PC with an optical
Before converting, you must ensure your chosen emulator supports the format. As of 2024, support is excellent: Verify the CHD with chdman verify or by
The most accurate Saturn emulator for Windows (originally written by shima). Warning: Older versions of SSF do NOT support CHD. However, the newer, patched versions (SSF PreviewVer) have added CHD support via a DLL plugin.
Create a folder on your desktop called Saturn_Convert.
CHD (Compressed Hunks of Data) files are a container format used to store disc images (including Sega Saturn discs) in a compressed, lossless form commonly used by emulation software such as MAME and other retro emulators. Sega Saturn ROMs can be distributed either as single-bin/cue disc images or converted into CHD to save space and improve performance in some emulators.