User Manual

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4.3 Boot Options
In the BIOS Setup program, the user can choose to boot from a hard drive, removeable driver, or
the network. The default setting is for the hard drive to be the first boot device, the removeable
drive second, and the network third.
NOTE The network can be selected as a boot device. This selection allows booting from the
onboard LAN or a network add-in card with a remote boot ROM installed. Pressing the <F12> key
during POST automatically forces booting from the LAN. To use this key during POST, the User
Access Level in the BIOS Setup program’s Security menu must be set to Full.
4.3.1 Boot Device Selection During Post
Pressing the <F10> key during POST causes a boot device menu to be displayed. The menu displays
the list of available boot devices.
4.3.2 Power Button Menu
As an alternative to Configuration Mode or normal POST hotkeys, the user can use the power
button to access a menu with BIOS and boot options. The Power Button Menu is accessible via the
following sequence:
1. System is in S4/S5 (not G3).
2. The user pushes the power button and holds it down for 3 seconds.
3. The Power Button LED will be white color for the first 3 seconds. After 3 seconds, switch the
Power Button LED to yellow color to signal the user to release the power button.
4. User releases the power button before the 4-second shutdown override.
If this boot path is taken, the BIOS uses default settings, ignoring settings in VPD where
possible. At the point where Setup Entry/Boot would be in the normal boot path, the BIOS
displays the following prompt and wait for a keystroke:
If an unrecognized key is hit, then the BIOS does nothing and waits for another keystroke. If one
of the listed hotkeys is hit, the BIOS will follow the indicated boot path. Password requirements
must still be honored.
Table 26. Power Button Menu Options
Keystroke
Option
Description
[ESC]
Normal Boot
[F2]
BIOS Setup Menu
[F3]
Disable Fast Boot
Note: Is only be displayed if at least one Fast Boot optimization is enabled.
If Disable Fast Boot is selected, the BIOS disables all Fast Boot
optimizations and reset the system.
[F4]
BIOS Recovery
The BIOS searches for a matching .CAP file from the \EFI\ASUS folder in
the supported media with the supported file system. If a matching recovery
capsule is found, the BIOS displays the following:
BIOS Recovers to <BIOSID> in 20 seconds.
[ESC] Cancel Recovery