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Alienware Ubuntu Based Systems: Disable Secure Boot to Modify or Replace the bootloader

Summary: How to disable Secure Boot on an Ubuntu-based Alienware computer.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.

Symptoms


 

Ubuntu Based Systems:
Disable Secure Boot to Modify or Replace the bootloader

 

SLN300908_en_US__11372206532397.1327056520179_img_Header

 


Alienware Supported Systems:

 
  Alienware X51 R2

 

Other Dell Supported Systems:

 
Precision
(Kernel v14.04 SP1)
  3620   3420   7510   7710   3510   5510
Optiplex
(Kernel v14.04 SP1)
  7040   5040   3040   7440   3240    
Latitude
(Kernel v14.04 SP1)
  E7270   E7470   E5260   E5460   E5560   3470
  3570   3350   5414   7214   7414   7370
Latitude
(Kernel v14.04)
  3160   3460   3560            

Ubuntu based systems like the Alienware X51 R2 and other Dell systems come with a function called "Secure Boot" enabled. Secure Boot allows only bootloaders signed with trusted key pairs to be booted on a system.

In accordance with the GPLv3, customers are required to be able to make modifications or replace the GRUB2 bootloader shipped with some Linux systems that have secure boot enabled. GRUB2 is an open source bootloader that has been signed using a private key.

Customers are welcome to either use their own public/private key pair for signing the bootloader or disable secure boot if they want to replace or modify the bootloader.


Cause

Disabling "Secure Boot"

 

  1. Turn on your system
  2. Tap the F2 key as the system turns on
  3. You will access the system setup utility
  4. Click the Boot tab
  5. Highlight Secure Boot
  6. Press Enter, select Disable and press Enter again.
  7. Press F10 and select Yes

 

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Resolution

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Affected Products

Alienware X51 R2
Article Properties
Article Number: 000148406
Article Type: Solution
Last Modified: 26 Feb 2021
Version:  4
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