Mark VI BIOS
From Halopedia, the Halo wiki
The Mark VI BIOS is firmware, designed to be the first code run by the MJOLNIR Armor when activated. The initial function of the BIOS is to identify, test, and initialize system devices such as the heads-up display, energy shield systems and other hardware.
The BIOS handles most of the MJOLNIR's software functions when initiated. Updates to the BIOS allows newer hardware to be supported and function.
BIOS versions can be viewed though the Mark VI magnification system when no weapon is being held or no zoom supported weapon is being held or at the top of upper half of the Heads-up display
This BIOS was created by Cortana sometime after the Battle of Installation 00 and was used by John-117 at least until he returned to Earth on July 26, 2558. This also received a soft patch for Covenant technology.
List of appearances