Asus Z97-WS, User Manual, Page: 125 / 186

Z97-WS
3-53
Chapter 3
Boot from Storage Devices [Legacy OpROM first]
This item 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 PCI-E/PCI Expansion Devices [Legacy OpROM first]
This item allows you to select the type of PCIe/PCI expansion devices that
you want to launch.
Configuration options: [Legacy OpROM first] [UEFI driver first]
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]
[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
This allows you to manage the Secure Boot keys.
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 Secure Boot Keys
This item 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.
Load Default PK
Select Yes to load the system default PK or select No to load a downloaded
PK from a USB storage device.
The PK file must be formatted as a UEFI variable structure with time-based authenticated
variable.