Asus B85-A - Manual (Page 67)

ASUS B85-A 2-39
Boot from Storage Devices [Legacy OPROM first]
Allows you to select the type of storage devices that you want to launch. Configuration
options: [Both, Legacy OPROM first] [Both, UEFI first] [Legacy OPROM first] [UEFI driver
first] [Ignore]
Boot from PCIe/PCI Expansion Devices [Legacy OPROM first]
Allows you to select the type of PCIe/PCI expansion devices that you want to launch.
Configuration options: [Legacy OPROM first] [UEFI driver first]
2.8.9 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 UE...]
Allows you to select your installed operating system.
[Windows UEFI mode]
Executes 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, Windows ® Vista/XP, or other Microsoft ® Secure Boot
non-compliant OS. Only on Windows ® UEFI mode that Microsoft ®
Secure Boot can function properly.
The following item appears when OS Type is set to [Windows UEFI mode].
Key Management
This item appears only when you set Secure Boot Mode to [Custom]. 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
This item appears only when you load the default Secure Boot keys. This item allows
you to save all default Secure Boot keys.
PK Management
The Platform Key (PK) locks and secures the firmware from any non-permissible
changes. The system verifies the PK before your system enters the OS.