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Chapter 3 – Asus GRYPHON Z87 User Manual

Page 114

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Chapter 3: BIOS setup

Chapter 3

Secure Boot

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]

[Windows UEFI

Mode]

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.

The following item appears only when you set the OS Type to [Windows UEFI mode].

Key Management
This item appears only when you set OS Type to [Windows UEFI Mode]. It allows you

to manage the Secure Boot keys.

Install Default Secure Boot keys

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 Secure Boot Keys

Allows you to save the PK (Platform 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.

Delete PK

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]
Load PK from File

Allows you to load the downloaded PK from a USB storage device.

The PK file must be formatted as a UEFI variable structure with time-based authenticated

variable.