User Manual

ROG MAXIMUS XII FORMULA BIOS Manual
67
Secure Boot
This item allows you to configure the Windows
®
Secure Boot settings and manage its keys
to protect the system from unauthorized access and malwares during POST.
OS Type
[Windows UEFI Mode] This item allows you to select your installed operating
system. Execute the Microsoft
®
Secure Boot check. Only
select this option when booting on Windows
®
UEFI mode
or other Microsoft
®
Secure Boot compliant OS.
[Other OS] Get the optimized function when booting on Windows
®
non-UEFI mode. Microsoft
®
Secure Boot only supports
Windows
®
UEFI mode.
Key Management
Install Default Secure Boot keys
This item allows you to immediately load the default Security Boot keys, Platform key
(PK), Key-exchange Key (KEK), Signature database (db), and Revoked Signatures
(dbx). When the default Secure boot keys are loaded, the PK state will change from
Unloaded mode to loaded mode.
Clear Secure Boot keys
This item appears only when you load the default Secure Boot keys. This item allows
you to clear all default Secure Boot keys.
Save all Secure Boot variables
This item allows you to save all secure boot keys to a USB storage device.
PK Management
The Platform Key (PK) locks and secures the firmware from any permissible changes.
The system verifies the PK before your system enters the OS.
Save To File
This item allows you to save the PK to a USB storage device.
Set New key
This item allows you to load the downloaded PK from a USB storage
device.
Delete key
This item allows you to delete the PK from your system. Once the PK is
deleted, all the system’s Secure Boot keys will not be active.
Configuration options: [Yes] [No]
The PK file must be formatted as a UEFI variable structure with time-based authenticated
variable.
KEK Management
The KEK (Key-exchange Key or Key Enrollment Key) manages the Signature
database (db) and Revoked Signature database (dbx).
Key-exchange Key (KEK) refers to Microsoft
®
Secure Boot Key-Enrollment Key (KEK).