Dell E43S Series Installation And Service Manual page 36

Boot Settings
You can use the Boot Settings screen to set the boot mode to either BIOS or UEFI. It also enables you to specify the boot order.
NOTE: The XC Series system does not support the NVDIMM-N, RAID, or UEFI settings.
• UEFI: The Unified Extensible Firmware Interface (UEFI) is a new interface between operating systems and platform firmware. The
interface consists of data tables with platform related information, also boot and runtime service calls that are available to the operating
system and its loader. The following benefits are available when the Boot Mode is set to UEFI:
– Support for hard drive partitions larger than 2 TB.
– Enhanced security (e.g., UEFI Secure Boot).
– Faster boot time.
• BIOS: The BIOS Boot Mode is the legacy boot mode. It is maintained for backward compatibility.
Viewing Boot Settings
To view the Boot Settings screen, perform the following steps:
1 Turn on, or restart your system.
2 Press F2 immediately after you see the following message:
F2 = System Setup
NOTE: If your operating system begins to load before you press F2, wait for the system to finish booting, and then restart
your system and try again.
3 On the System Setup Main Menu screen, click System BIOS.
4 On the System BIOS screen, click Boot Settings.
Boot Settings details
NOTE: The NVDIMM-N, RAID or UEFI settings are not supported.
The Boot Settings screen details are explained as follows:
Option Description
Boot Mode Enables you to set the boot mode of the system.
If the operating system supports UEFI, you can set this option to UEFI. Setting this field to BIOS allows
compatibility with non-UEFI operating systems. This option is set to BIOS by default.
Boot Sequence Enables or disables the Boot Sequence Retry feature. If this option is set to Enabled and the system fails to boot,
Retry the system re-attempts the boot sequence after 30 seconds. This option is set to Enabled by default.
Hard-Disk Failover Specifies the hard drive that is booted in the event of a hard drive failure. The devices are selected in the Hard-
Disk Drive Sequence on the Boot Option Setting menu. When this option is set to Disabled, only the first hard
drive in the list is attempted to boot. When this option is set to Enabled, all hard drives are attempted to boot in
the order selected in the Hard-Disk Drive Sequence. This option is not enabled for UEFI Boot Mode. This option
is set to Disabled by default.
36 Pre-operating system management applications
CAUTION: Switching the boot mode may prevent the system from booting if the operating system is not
installed in the same boot mode.
NOTE: Setting this field to UEFI disables the BIOS Boot Settings menu.