H81M-C User's Manual
Page 64
...] The system automatically detects the bootable devices and the add-on devices. [Enabled] For better compatibility, enable the CSM to fully support the non-UEFI driver add-on device to do so. 2.8.6 Interrupt 19 Capture [Disabled] [Enabled] [Disabled] Allows the option ROMs to ...display during the boot sequence. The third-party ROM messages will be pressed when error occurs. Configuration options: [Legacy OPROM first] [UEFI driver first] [Ignore] 2-36 Chapter 2: Getting started Configuration options: [Disabled] [Enabled] 2.8.5 Option ROM Messages [Force BIOS] [Force BIOS] [...
...] The system automatically detects the bootable devices and the add-on devices. [Enabled] For better compatibility, enable the CSM to fully support the non-UEFI driver add-on device to do so. 2.8.6 Interrupt 19 Capture [Disabled] [Enabled] [Disabled] Allows the option ROMs to ...display during the boot sequence. The third-party ROM messages will be pressed when error occurs. Configuration options: [Legacy OPROM first] [UEFI driver first] [Ignore] 2-36 Chapter 2: Getting started Configuration options: [Disabled] [Enabled] 2.8.5 Option ROM Messages [Force BIOS] [Force BIOS] [...