Dell PowerEdge C6420 EMC Installation and Service Manual - Page 47

Boot Settings details, Choosing system boot mode, Changing boot order, UEFI Boot Mode

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Boot Settings details About this task The Boot Settings screen details are explained as follows: Option Boot Mode Description Enables you to set the boot mode of the system. CAUTION: Switching the boot mode may prevent the system from booting if the operating system is not installed in the same boot mode. 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. NOTE: Setting this field to UEFI disables the BIOS Boot Settings menu. Boot Sequence Retry Enables or disables the Boot Sequence Retry feature. If this option is set to Enabled and the system fails to 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 Placeholder Enables or disables the Hard-disk drive placeholder option. This option is set to Disabled by default. BIOS Boot Settings Enables or disables BIOS boot options. NOTE: This option is enabled only if the boot mode is BIOS. UEFI Boot Settings Enables or disables UEFI Boot options. The UEFI options include PXE boot devices. NOTE: This option is enabled only if the boot mode is UEFI. UEFI Boot Sequence Boot Options Enable/Disable Enables you to change the boot device order. Enables you to select the enabled or disabled boot devices. Choosing system boot mode The BIOS boot mode (the default), is the standard BIOS-level boot interface. NOTE: The system also supports the UEFI boot mode. NOTE: Operating systems must be UEFI-compatible 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. NOTE: For the latest information about supported operating systems, go to www.dell.com/ossupport. Changing boot order About this task You may have to change the boot order if you want to boot from a USB key. You may have to change the boot order if you want to boot from a USB key or an optical drive. The following instructions may vary if you have selected BIOS for Boot Mode. Pre-operating system management applications 47

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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.
CAUTION:
Switching the boot mode may prevent the system from booting if the operating system
is not installed in the same boot mode.
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.
NOTE:
Setting this field to UEFI disables the BIOS Boot Settings menu.
Boot Sequence
Retry
Enables or disables the
Boot Sequence Retry
feature. If this option is set to
Enabled
and the system fails to
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
Placeholder
Enables or disables the Hard-disk drive placeholder option. This option is set to
Disabled
by default.
BIOS Boot
Settings
Enables or disables BIOS boot options.
NOTE:
This option is enabled only if the boot mode is BIOS.
UEFI Boot
Settings
Enables or disables UEFI Boot options. The UEFI options include
PXE
boot devices.
NOTE:
This option is enabled only if the boot mode is UEFI.
UEFI Boot
Sequence
Enables you to change the boot device order.
Boot Options
Enable/Disable
Enables you to select the enabled or disabled boot devices.
Choosing system boot mode
The BIOS boot mode (the default), is the standard BIOS-level boot interface.
NOTE:
The system also supports the UEFI boot mode.
NOTE:
Operating systems must be UEFI-compatible 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.
NOTE:
For the latest information about supported operating systems, go to
www.dell.com/ossupport
.
Changing boot order
About this task
You may have to change the boot order if you want to boot from a USB key. You may have to change the boot order if you want to boot
from a USB key or an optical drive. The following instructions may vary if you have selected
BIOS
for
Boot Mode
.
Pre-operating system management applications
47