Boot Mode Selection; Network Stack; Ipv4 Pxe Support; Ipv6 Pxe Support - Gigabyte GA-H81M-S1 User Manual

& CSM Support
Enables or disables UEFI CSM (Compatibility Support Module) to support a legacy PC boot process.
Enables UEFI CSM. (Default)
Always
Disables UEFI CSM and supports UEFI BIOS boot process only.
Never
This item is configurable only when Windows 8 Features is set to Windows 8 or Windows 8 WHQL.
& Boot Mode Selection
Allows you to select which type of operating system to boot.
UEFI and Legacy Allows booting from operating systems that support legacy option ROM or UEFI
option ROM. (Default)
Legacy Only Allows booting from operating systems that only support legacy Option ROM.
UEFI Only Allows booting from operating systems that only support UEFI Option ROM.
This item is configurable only when CSM Support is set to Always.
& LAN PXE Boot Option ROM
Allows you to select whether to enable the legacy option ROM for the LAN controller. (Default: Disabled)
This item is configurable only when CSM Support is set to Always.
& Storage Boot Option Control
Allows you to select whether to enable the UEFI or legacy option ROM for the storage device controller.
Disables option ROM.
Disabled
Legacy only Enables legacy option ROM only. (Default)
UEFI only Enables UEFI option ROM only.
Legacy First Enables legacy option ROM first.
UEFI First Enables UEFI option ROM first.
This item is configurable only when CSM Support is set to Always.
& Other PCI Device ROM Priority
Allows you to select whether to enable the UEFI or Legacy option ROM for the PCI device controller other
than the LAN, storage device, and graphics controllers.
Legacy OpROM Enables legacy option ROM only.
UEFI OpROM Enables UEFI option ROM only. (Default)
This item is configurable only when CSM Support is set to Always.
& Network stack
Disables or enables booting from the network to install a GPT format OS, such as installing the OS from
the Windows Deployment Services server. (Default: Disabled)
& Ipv4 PXE Support
Enables or disables IPv4 PXE Support. This item is configurable only when Network stack is enabled.
& Ipv6 PXE Support
Enables or disables IPv6 PXE Support. This item is configurable only when Network stack is enabled.
(Note) This item is present only when you install a CPU that supports this feature. For more information about
Intel CPUs' unique features, please visit Intel's website.
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