Using UEFI
206
Oracle Server X6-2 Service Manual • June 2016
Related Information
■
“BIOS Setup Utility Menus” on page 202
■
“BIOS Key Mappings” on page 203
■
“BIOS Setup Utility Menu Options” on page 227
■
“Exit BIOS Setup Utility” on page 224
Using UEFI
The BIOS firmware controls the system from power-on until an operating system is booted.
The Oracle Server X6-2 contains a Unified Extensible Firmware Interface (UEFI) that can be
configured to support either UEFI or Legacy BIOS. Legacy BIOS is the default mode, and
should be used with software and adapters that do not have UEFI drivers.
This section includes the following information:
■
“Selecting Legacy BIOS or UEFI Boot Mode” on page 206
■
“Switching Between Legacy BIOS and UEFI Boot Modes” on page 207
■
“UEFI Boot Mode Advantages” on page 208
■
“Configuration Utilities for Add-In Cards” on page 208
Selecting Legacy BIOS or UEFI Boot Mode
You can select either Legacy BIOS Boot Mode or UEFI Boot Mode. Legacy BIOS Boot Mode
is the default.
If you change BIOS boot modes, the boot candidates from the previously selected mode are
no longer available from the Boot Options Priority List in the BIOS Setup Utility. The boot
candidates from the new mode appear in the Boot Options Priority List only after you select
Save Changes and Reset from the BIOS Setup Utility menu. Use the Oracle ILOM BIOS
Backup and Restore function to preserve the BIOS configuration in case you want to switch
back to the previously selected mode. For information, refer to the Oracle Integrated Lights Out
Manager (ILOM) 3.2 Documentation Library at
http://www.oracle.com/goto/ilom/docs
All supported operating systems can use either UEFI Boot Mode or Legacy BIOS Boot Mode.
However, once you choose a boot mode and install an operating system, if you reboot the server
and select a different boot mode, the installed image can only be used in the mode in which
it was installed. For instructions for selecting either UEFI Boot Mode or Legacy BIOS Boot
Mode, see
“Selecting Legacy BIOS or UEFI Boot Mode” on page 206
.
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