Using the System Setup Program and UEFI Boot Manager 53
Using the System Setup Program 
and UEFI Boot Manager
The System Setup program is the BIOS program that enables you to manage 
your system hardware and specify BIOS-level options. From the System Setup 
program, you can:
• Change the NVRAM settings after you add or remove hardware
• View the system hardware configuration
• Enable or disable integrated devices
• Set performance and power management thresholds
• Manage system security
Choosing the System Boot Mode
The System Setup program also enables you to specify the boot mode for 
installing your operating system:
• BIOS boot mode (the default) is the standard BIOS-level boot interface.
• UEFI boot mode is an enhanced 64-bit boot interface based on Unified 
Extensible Firmware Interface (UEFI) specifications that overlays the 
system BIOS. See "Entering the UEFI Boot Manager" on page 65 for more 
information on this interface.
You must select the boot mode in the Boot Mode field of the Boot Settings 
screen of the System Setup Program. Once you specify the boot mode, the 
system boots in the specified boot mode and you then proceed to install your 
operating system from that mode. Thereafter, you must boot the system to 
the same boot mode (BIOS or UEFI) to access the installed operating system. 
Trying to boot the operating system from another boot mode causes the 
system to halt immediately at startup.
  NOTE: Operating systems must be UEFI-compatible (for example, Microsoft
®
 
Windows Server
®
 2008 x64 version) to be installed from the UEFI boot mode. DOS 
and 32-bit operating systems do not support UEFI and can only be installed from the 
BIOS boot mode.
R310HOM.book  Page 53  Thursday, March 4, 2010  1:03 AM