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F12 One Time Boot Device

Use this menu to manage boot devices in the system.

Table 1. Boot Devices Manager
ItemOptionsDescription
Legacy Mode

  • [ ]

  • [X]

Override System Boot Mode in the Boot Mode menu.

Setting Option ROM Execution Order in the Devices and I/O Ports menu may still affect the boot ordering.

It is needed to have PCI 64-Bit Resource Allocation in the Device and I/O Ports menu set to [Disabled] for some network cards' legacy PXE boot option.

Note
When selecting this feature, the page is refreshed to show legacy group:

  • CD/DVD Rom

  • Hard Disk

  • Network

  • USB Storage

List of UEFI Boot Options

N/A

Enter in specified boot device.