Interrupt 19 Capture; Csm Support; Bios Flash Protection; Option Rom Messages - Biostar B75MU3 Manual

Uefi bios manual
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B75MU3+ UEFI BIOS Manual

Option ROM Messages

This item sets 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

CSM Support

This item enables / disables CSM Support. If Auto is selected, based on OS, CSM
will be enabled / disabled automatically.
Options:
Enabled (Default) / Disabled / Auto

BIOS Flash protection

While enabled, it can't flash write and flash erase by SMI.
Options:
Enabled (Default) / Disabled
Boot Success Beep
When this item is set to Enabled, BIOS will let user know boot success with beep.
Options:
Enabled (Default) / Disabled
UEFI Boot
This option enables/disables boot from the UEFI Devices.
Options:
Disabled (Default) / Enabled
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