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Chapter 4: BIOS Settings
Feature
CSM Support
GateA20 Active
Option ROM Messages
INT19 Trap Response
Boot option filter
Network
Storage
Video
Options
Disabled
Enables or disables CSM Support
Enabled
UPON REQUEST - GA20 can be disabled using
Upon Request
BIOS services. ALWAYS - do not allow disabling
Always
GA20; this option is useful when any RT code is
executed above 1MB.
Force BIOS
Set display mode for Option ROM
Keep Current
BIOS reaction on INT19 trapping by Option
Immediate
ROM: IMMEDIATE - execute the trap right
Postponed
away; POSTPONED - execute the trap during
legacy boot.
UEFI and Legacy
Legacy only
This option controls Legacy/UEFI ROMs priority
UEFI only
Do Not Launch
Controls the execution of UEFI and Legacy PXE
UEFI
OpROM
Legacy
Do Not Launch
Controls the execution of UEFI and Legacy
UEFI
Storage OpROM
Legacy
Do Not Launch
Controls the execution of UEFI and Legacy
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Description
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