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5.4.7
CSM Configuration
CSM Support [Enabled]
This option allows you to enable or disable CSM Support.
Configuration options: [Disabled] [Enabled]
GateA20 Active [Upon Request]
This allows you to set the GA20 option.
[Upon Request] GA20 can be disabled using BIOS services.
[Always]
Option ROM Messages [Force BIOS]
This allows you to set the display mode for Option ROM.
Configuration options: [Force BIOS] [Keep Current]
Boot Option filter [Legacy only]
This option allows you to control the Legacy/UEFI ROMs priority.
Configuration options: [UEFI and Legacy] [Legacy only] [UEFI only]
Network / Storage / Video [Legacy]
This option allows you to control the execution of UEFI and Legacy PXE/Storage/Video
OpROM.
Configuration options: [UEFI ] [Legacy]
Other PCI devices [Legacy]
This item determines the OpROM execution policy for devices other than Network, Storage,
or Video.
Configuration options: [UEFI ] [Legacy]
5-36
D o not allow disabling GA20; this option is useful when any RT code is
executed above 1MB
Chapter 5: BIOS Setup
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