ASUS f2a55-m le desktop motherboard f2a55-m le Manual De Usuario

Chapter 2: BIOS information

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[Force BIOS] 

The third-party ROM messages will be forced to display during the boot 

sequence. 

[Keep Current]  The third-party ROM messages will be displayed only if the third-party 

manufacturer had set the add-on device to do so.

[Normal Boot]  Returns to normal boot on the next boot after an AC power loss.
[Fast Boot] 

Accelerates the boot speed on the next boot after an AC power loss.

This option controls whether or not CSM will be launched.

Launch CSM [Auto]
Configuration option: [Auto] [Enabled] [Disabled]

[Enabled] [Disabled]

The following four items appear only when you set Launch CSM to [Enabled].

Boot option filter [UEFI and Legacy]
Configuration option: [UEFI and Legacy] [Legacy only] [UEFI only]
Launch PXE OpROM policy [Legacy first]
Configuration option: [DO NOT launch] [Legacy first] [UEFI first]
Launch Storage OpROM policy [Legacy first]
Configuration option: [DO NOT launch] [Both, Legacy first] [Both, UEFI first] [Legacy 

first] [UEFI first]
Other device ROM priority [Legacy first]
Configuration option: [Legacy first] [UEFI first]

[Legacy first] [UEFI first]

This option allows you to configure the Secure Boot related parameters.

OS Type [Other Legacy & UEFI]
Configuration option: [Windows 8 UEFI] [Other Legacy & UEFI]
Secure Boot Mode [Standard]
This item appears only when you set the OS Type to [Windows 8 UEFI]. Configuration 

option: [Standard] [Custom]

The following items appear when Secure Boot Mode is set to [Custom].