Cerbios.ini Official

cerbios.ini file is a configuration file for , a custom BIOS for the original Xbox. It allows you to customize boot behavior, drive speeds, and dashboard paths without reflashing the BIOS. Important: Recent Path Change Cerbios V3.0.0 BETA (August 2025), the default location for the file has changed: E:\Cerbios\cerbios.ini Previous Path: C:\cerbios.ini (standard for versions older than V3.0.0) ConsoleMods Wiki

For the BIOS to read your custom settings, the cerbios.ini file must be placed in a specific directory on the Xbox hard drive: : The root of the C: partition . cerbios.ini

Traditionally, BIOS files for the Original Xbox (like Evox M8) were "hardcoded." To change a setting—such as the boot animation, the default dashboard path, or the I/O timing—you had to extract the BIOS, edit it with a hex editor, re-flash it, and risk bricking your console. cerbios