Administrator Guide

9 : BIOS vs. UEFI | Doc ID 20444677 | June 2018
4 Configuration Settings for UEFI Boot Mode
This section provides an overview of the configuration changes needed to operate a Dell EMC PowerEdge
server in UEFI Boot Mode. It is assumed that the reader is familiar with the traditional BIOS boot mode, and
likely has existing infrastructure that uses BIOS boot mode.
Unless otherwise noted, all configuration settings are accessible through integrated Dell Remote Access
Controller (iDRAC) interfaces such as RACADM, or locally through the System Setup utility. IDRAC interface
documentation can be found at http://www.delltechcenter.com/iDRAC. The System Setup utility is accessed
by pressing F2 at the prompt shown during the system boot process.
4.1 UEFI Boot Settings
The “Boot Mode” setting controls whether the system boots in the traditional BIOS mode or in UEFI mode. In
System Setup, enter System BIOS > Boot Settings and set Boot Mode to UEFI (see Figure 1). In RACADM,
set the BootMode attribute to UEFI (see Figure 2).
Figure 1 Setting Boot Mode in System Setup.