Users Guide

NOTE: The unattended installation feature is supported only for Microsoft Windows and Red Hat

Enterprise Linux 7 operating systems. If you select an operating system other than Windows or Red

Hat Enterprise Linux 7, the Unattended Install option is grayed out.

Related Links

Installing an operating system

Using the optional RAID configuration

UEFI Secure Boot

The UEFI Secure Boot is a technology that secures the boot process by verifying if the drivers and

operating system loaders are signed by the key that is authorized by the firmware. When enabled, Secure

Boot makes sure that:

• BIOS boot option is disabled.

• Only UEFI-based operating systems are supported for operating system deployment in all

management applications.

• Only authenticated EFI images and operating system loaders are started from UEFI firmware.

You can enable or disable the Secure Boot attribute locally or remotely using Dell management

applications. Lifecycle Controller supports deploying an operating system with the Secure Boot option

only in the UEFI boot mode.

There are two BIOS attributes that are associated with Secure Boot:

• Secure Boot — Displays if the Secure Boot is enabled or disabled.

• Secure Boot Policy — Allows you to specify the policy or digital signature that BIOS uses to

authenticate. The policy can be classified as:

– Standard — BIOS uses the default set of certificates to validate the drivers and operating system

loaders during the boot process.

– Custom — BIOS uses the specific set of certificates that you can import or delete from the

standard certificates to validate the drivers and operating system loaders during the boot process.

NOTE: The Secure Boot Policy is read-only in Lifecycle Controller. You can change this setting

only in the BIOS. To enter BIOS system setup, press <F2> during POST.

NOTE: The Secure Boot feature is supported on the Dell 12th generation PowerEdge servers, only if

BIOS on the system supports this feature. To deploy an operating system using the Secure boot

option, see Installing An Operating System.

NOTE: For more information on UEFI, go to uefi.org.