Sun Oracle Sun Server X4-2, Service Manual

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Setting Up BIOS Configuration Parameters 169
UEFI BIOS Boot Mode Advantages
When the option is available to choose between a Legacy BIOS Boot Mode or a 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
“Legacy Option ROM Allocation” on page 170 .
■
Supports operating system boot partitions greater than 2 terabytes (2 TB) in size.
For more information about limitations for supported operating systems, refer to
the
Sun Server X4-2 Product Notes at:
http://www.oracle.com/goto/X4-2/docs
■
Integrates PCIe device configuration utilities within the BIOS Setup Utility menus.
For more information, see
“BIOS Setup Utility Menu Options” on page 197 .
■
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 BIOS Boot Mode” on page 167
■
“Select the Boot Device” on page 175
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 UEFI Driver Control Menu as part of the standard BIOS
Setup Utility screens. For example, if the Oracle Sun Storage 6Gb SAS PCIe RAID
host bus adapter (HBA) is installed in the server, the configuration utility for the
HBA appears as a menu selection on the BIOS UEFI Driver Control Menu.
Related Information
■
“Selecting Legacy BIOS or UEFI BIOS Boot Mode” on page 167