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Utilities
Boot Configuration > CSM Parameters
Table 4-42: Boot Configuration > CSM Parameters
Feature
Options
Description
Compatibility Support Module
Configuration
Info
CSM Support
•
Enabled
• Disable
CSM Support
CSM16 Module Version
Info only
GataA20 Active
•
Upon Request
• Always
• Upon Request – GA20 can be disabled
using BIOS services.
• Always – do not allow disabling of GA20;
this option is useful when any RT code is
executed above 1MB.
Option ROM Messages
• Force BIOS
• Keep Current
Set display mode for Option ROM.
INT19 Trap Response
•
Immediate
• Postponed
• BIOS reaction on INT19 trapping by
Option ROM:
• Immediate - execute the trap right away;
Postponed – execute the trap during
legacy boot.
Boot option filter
•
UEFI and Legacy
• Legacy only
• UEFI only
This option controls legacy/UEFI ROM
priority.
Option ROM execution
Info only
Network
•
Do not launch
• UEFI only
• Legacy only
Controls the execution of UEFI and legacy
PXE OpROM.
Storage
• Do not launch
•
UEFI only
• Legacy only
Controls the execution of UEFI and legacy
storage OpROM.
Video
• UEFI only
• Legacy only
Controls the execution of UEFI and legacy
video OpROM.
Other PCI devices
•
UEFI only
• Legacy only
Determines OpROM execution policy for
devices other than network, storage or
video.