Service Guide

Server Utilities
Intel
®
Server System R1000RP Service Guide 129
appropriate. If they were recognized after Boot Device enumeration, they will not appear as a
bootable device for the Boot Options screen, the Boot Manager screen, or the F6 Boot Menu.
There are two main types of boot order control, Legacy Boot and EFI Optimized boot. These are
mutually exclusive – when EFI Optimized Boot is enabled, Legacy Boot (the default) is disabled.
Within Legacy Boot operation, there are two further methods of ordering boot devices, Dynamic
Boot Order and Static Boot Order.
The default for Boot Order control is Legacy Boot, with Dynamic Boot Order. If all types of
bootable devices are installed in the system, then the default Boot Order is as follows:
 CD/DVD-ROM
 Floppy Disk Drive
 Hard Disk Drive
 PXE Network Device
 BEV (Boot Entry Vector) Device
 EFI Shell and EFI Boot paths
In this default Boot Order, a USB device may appear in any of several Device Classes, due to the
flexibility of USB connections and USB emulation of various types of devices.
Note: A USB Key (USB Flash Drive) can be formatted to emulate either a Floppy Drive or a Hard
Drive and will appear in that Boot Device Class. However, although it can be formatted as a
CDROM Drive, it will not be detected as such. It will be treated as a Hard Disk and will appear in
the list of available Hard Drives.