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BIOS Setup
MBD301
User’s Manual
43
4
4.4.8
CSM Configuration
BIOS Setting
Description
CSM Support
Enable / disable CSM support.
GateA20 Active
•
UPON REQUEST - GA20 can be disabled using
BIOS services.
•
ALWAYS
– do not allow disabling GA20; this
option is useful when any RT code is executed
above 1 MB.
INT19 Trap
Response
BIOS reaction on INT19 trapping by Option ROM:
•
IMMEDIATE - executes the trap right away.
•
POSTPONED - executes the trap during legacy
boot.
HDD Connection
Order
Some OS require HDD handles to be adjusted, i.e.
OS is installed on drive 80h.
Options: Adjust, Keep
Boot option filter
Controls the priority of Legacy / UEFI ROMs.
Options: UEFI and Legacy, Legacy only, UEFI only
Network
Controls the execution of UEFI and Legacy Network
OpROM.
Options: Do not launch, UEFI, Legacy
Содержание MBD301
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