Sega Dreamcast bios set specially for use with Chankast, the Sega Dreamcast Emulator for Windows Operating Systems This includes:- dc_bios.bin / dc_flash.bin  – Start up GUI dc_flash.bin – Stores Date, Time & Language settings (once your details are set make that file read only) All 3 regions are included; use the one that matches with the region of your game.
Download dc_bios.bin

How to Install dc_bios.bin

  1. Download the file dc_bios.bin to your desktop.
  2. Extract dc_bios.bin to your computer. The best is to unzip it to the directory of the program that request dc_bios.bin .

In case it doesn't work, you will have to extract dc_bios.bin to your system directory.

Default Locations are:

  • C:\Windows\System (Windows 95/98/Me)
  • C:\WINNT\System32 (Windows NT/2000)
  • C:\Windows\System32 (Windows XP, Windows Vista, Windows 7,Windows 8.1, Windows 10)

In case you are using a 64-bit version of Windows, you should also place it in/


  1. Make a backup copy of the original file.
  2.  Make sure overwrite any existing files.
  3. Restart your computer.

The problem still occurs? You probably need to register this file so try the following:

  1. Open Windows Start menu and select "Run".
  2. Type CMD and press Enter (or if you use Windows ME, type COMMAND)).
  3. Type regsvr32 dc_bios.bin and press Enter.

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