ASUS X99-M WS 用户手册

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Chapter 3: BIOS setup

DB Management
The db (Authorized Signature database) lists the signers or images of UEFI 

applications, operating system loaders, and UEFI drivers that you can load on the 

single computer.

This item allows you to delete the db file from your system.
Configuration options: [Yes] [No]
Load Default db

This item allows you to load the downloaded db from a USB storage 

device.
Append Default db

This item allows you to load the additional db from a storage device so that 

more images can be loaded securely.

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

variable.

DBX Management
The dbx (Revoked Signature database) lists the forbidden images of db items that are 

no longer trusted and cannot be loaded.

This item allows you to delete the dbx file from your system.
Load Default dbx

This item allows you to load the downloaded dbx from a USB storage 

device.
Configuration options: [Yes] [No]
Append Default dbx

This item allows you to load the additional dbx from a storage device so 

that more db’s images cannot be loaded.

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

variable.

These items specify the boot device priority sequence from the available devices. The 

number of device items that appears on the screen depends on the number of devices 

installed in the system.

• 

To access Windows

®

 OS in Safe Mode, press <F8 > after POST (Windows

®

 8 not 

supported). 

• 

To select the boot device during system startup, press <F8> when ASUS Logo 

appears.

These item displays the available devices. The number of device items that appear on the 

screen depends on the number of devices installed in the system. Click an item to start 

booting from the selected device.