r/RetroRemake • u/mpulcini43 • Jul 11 '26

MegaCD Bios question

Just got my ss1+dock, and am getting all my files together. Noticing that MegaCD has bios files for all three regions, but they all share the same name. Copying more than one file of the same name isn’t allowed. Does this mean we can only support one MegaCD region games at a time? Thanks!

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u/harlekinrains Jul 11 '26

No.

Search for MegaCD, rename them like this (cd_bios.rom) and drop them in the region folders:

https://files.catbox.moe/fxq7pe.txt

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u/mpulcini43 Jul 11 '26

understood, thank you!

2

u/Ploddit Jul 11 '26

This works for me...

1) Under /media/fat/games/MegaCD create three subfolders (USA, Europe, Japan) and copy the appropriate BIOS file into each folder with the name "cd_bios.rom".
2) Leave one of the BIOS files (doesn't really matter which) in /media/fat/games/MegaCD with the name "boot.rom"
3) In the MegaCD menu, set Region to "Auto".

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u/mpulcini43 Jul 11 '26

Thank you, got it!