Dell EMC PowerEdge R640 Installation And Service Manual page 67

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.
On the System Setup Main Menu screen, click System BIOS.
On the System BIOS screen, click Boot Settings.
Boot Settings details
About this task
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 enables
compatibility with non-UEFI operating systems. This option is set to UEFI by default.
Boot Sequence Enables or disables the Boot Sequence Retry feature. If this option is set to Enabled and the system fails to
Retry boot, the system re-attempts the boot sequence after 30 seconds. This option is set to Enabled by default.
Hard-Disk Failover Specifies the drive that is booted in the event of a 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 drive in the list
is attempted to boot. When this option is set to Enabled, all 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.
Generic USB Boot Enables or disables the USB boot option. This option is set to Disabled by default.
Hard-disk Drive Enables or disables the Hard-disk drive placeholder option. This option is set to Disabled by default.
Placeholder
BIOS Boot Enables or disables BIOS boot options.
Settings
UEFI Boot Enables or disables UEFI Boot options.
Settings
The Boot options include IPv4 PXE and IPv6 PXE. This option is set to IPv4 by default.
UEFI Boot Enables you to change the boot device order.
Sequence
Boot Options Enables you to select the enabled or disabled boot devices.
Enable/Disable
Choosing system boot mode
System Setup enables you to specify one of the following boot modes for installing your operating system:
• BIOS boot mode is the standard BIOS-level boot interface.
• UEFI boot mode (the default), is an enhanced 64-bit boot interface.
If you have configured your system to boot to UEFI mode, it replaces the system BIOS.
From the System Setup Main Menu, click Boot Settings, and select Boot Mode.
Select the UEFI boot mode you want the system to boot into.
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.
NOTE: This option is enabled only if the boot mode is BIOS.
NOTE: This option is enabled only if the boot mode is UEFI.
Pre-operating system management applications 67