Boot Option Priorities; Boot Override - Asus SABERTOOTH Z87 User Manual

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

Boot Option Priorities

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.
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Boot Override

These items displays the available devices. The number of device items that appears on
the screen depends on the number of devices installed in the system. Click an item to start
booting from the selected device.
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Append dbx from File
Allows you to load the additional dbx from a storage device so that more
db's images cannot be loaded.
To access Windows ® OS in Safe Mode, do any of the following:
- Press <F5> when ASUS Logo appears.
- Press <F8> after POST.
To select the boot device during system startup, press <F8> when ASUS Logo
appears.
Chapter 3: BIOS setup