A75MH / A55MH UEFI BIOS Manual
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GateA20 Active
Upon Request – FA20 can be disabled using BIOS services. Always – do not allow
disabling GA20; this option is useful when any RT code is executed above 1MB
Options: Upon Request (Default) / Always
Option ROM Messages
This item s ets the display mode for option ROM.
Options: Force BIOS (Default) / Keep Current
Interrupt 19 Capture
Interrupt 19 is the software interrupt that handles the boot disk function. When set
to Enabled, this item allows the option ROMs to trap interrupt 19.
Options: Disabled (Default) / Enabled
BIOS Flash protection
While enabled, it can’t flas h write and flas h erase by SMI.
Options: Enabled (Default) / Disabled
Boot Option #1/#2/#3
The items specify the boo t device priority sequence from the available devic es.
The number of device items that appears on the screen depends on the number of
devices installed in the system.
CD/DVD ROM Drive BBS Priorities
This item sets the order of the legacy devices in this group.
Hard Drive BBS Priorities
This item sets the order of the legacy devices in this group.
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