Using UEFI
208 Oracle Server X6-2 Service Manual • June 2016
UEFI Boot Mode Advantages
When the option is available to choose between a Legacy BIOS Boot Mode or UEFI BIOS
Boot Mode operating system installation, the advantages to choosing a UEFI BIOS Boot Mode
installation include the following:
■
Avoids Legacy Option ROM address constraints. For more information, see “Using BIOS
for Legacy Option ROM Resource Allocation” on page 209.
■
Supports operating system boot partitions greater than 2 terabytes (2 TB) in size. For more
information about the limitations for supported operating systems, refer to the Oracle Server
X6-2 Product Notes at http://www.oracle.com/goto/x6-2/docs.
■
Integrates PCIe device configuration utilities within the BIOS Setup Utility menus. For
more information, see “BIOS Setup Utility Menu Options” on page 227.
■
Displays bootable operating system images in the boot list as labeled entities, for example,
you will see a Windows boot manager label as opposed to raw device labels.
Related Information
■
“Selecting Legacy BIOS or UEFI Boot Mode” on page 206
■
“Select the Boot Device” on page 213
■
“Exit BIOS Setup Utility” on page 224
Configuration Utilities for Add-In Cards
The method for interacting with configuration utilities for add-in cards and (system resident) I/
O adapters differs depending on whether Legacy BIOS Boot Mode or UEFI BIOS Boot Mode
is used.
In Legacy BIOS Boot Mode, I/O adapter utilities are invoked during BIOS POST progression
using hot keys identified by the adapter Option ROM during POST. When the hot key is
pressed, the adapter specific configuration utility interface is presented. Often the interface will
have a vendor-specific design.
In UEFI BIOS Boot Mode, the configuration screens for the add-in cards will appear as menu
items in the BIOS Advanced Menu as part of the standard BIOS Setup Utility screens. For
example, if the Oracle Storage 12 Gb/s SAS PCIe RAID host bus adapter (HBA) is installed in
the server, the configuration utility for the HBA appears as a menu selection under the iSCSI
menu option on the BIOS Advanced Menu.
Related Information
■
“Selecting Legacy BIOS or UEFI Boot Mode” on page 206
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