Item Options Description
Boot Option
• CD/DVD Rom
• Hard Disk
• Network
• System Setup
• NONE
Select the one-time boot option for next boot. NONE is
the default setting.
Boot Modes
Change between UEFI boot mode and legacy boot mode.
Item Options Description
System Boot Mode
• UEFI Mode
• Legacy Mode
Drivers, option ROMs and OS loaders the “Boot
Manager” attempt to boot.
[UEFI Mode]: Run UEFI drivers and boot a UEFI OS
loader. UEFI Mode is the default setting.
[Legacy Mode]: Run option ROMs and boot a legacy OS.
Note: This setting will be forced to [UEFI Mode] when
Legacy BIOS is disabled in System Settings->Legacy
BIOS->Legacy BIOS.
Infinite Boot Retry
• Enable
• Disable
Continuously retry the Boot Order. Ensure a bootable
device is specified in “Boot Order”. Disable is the default
setting.
Prevent OS Changes To Boot
Order
• Enable
• Disable
When set to "Enable", UEFI will remove the boot option
which is created by OS or OS Installer from Boot Order
List. Disable is the default setting.
Specify PCIe Slot For Network
Boot
255
Restrict network boot to one particular NIC installed at
the specified PCIe slot number 0-254.
• A value of 255 (255 is the default value) means no
restriction.
• In general, the value 0 refers to the onboard LAN but
there are exceptions to that. If there is no NIC installed
at the specified slot, network boot will fail.
Reboot Systems
Prompt to reboot the system. If Y is pressed, any setup changes will be lost and the system will reboot.
BMC settings
Use this menu to configure the management controller.
48 ThinkSystem Server with Intel Xeon SP (1st, 2nd Gen) UEFI Manual