Biostar A75MH Bios Setup - Page 27

A75MH / A55MH UEFI BIOS Manual 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 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 BIOS Flash protection While enabled, it can't flash write and flash erase by SMI. Options: Enabled (Default) / Disabled Boot Option #1/#2/#3 The items specify the boot device priority sequence from the available devices. 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. 26