Dell PowerEdge 15G servers may stop during POST after changing Secure Boot Policy

Summary: A stop during POST is possible after a customer changes Secure Boot Policy from either Standard or Custom to VMware Boot or Linux Boot.

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.
Check out other resources

Symptoms

Updating the BIOS from the September block release for either Intel or AMD 15G servers could experience a stop issue during POST. This stop can occur after a user modifies the Secure Boot Policy from either Standard or Custom to VMware Boot or Linux Boot.
Figure 1:
Secure boot policy option in BIOS

This issue affects all Intel and AMD 15G Platforms.

BIOS versions and systems affected:

Server Model BIOS revision
R650, R750, R650xs,
R750xs, R750xa, C6520, MX750C, XR11, R550, R450, T550		 1.15.2
R350, R250, T350, T150 1.10.2
XR4510C, XR4520C 1.16.2
R6515, R7515 2.16.1
C6525 2.16.2
XE8545 2.15.2
R6525, R7525 2.16.3

Cause

Root cause investigation is underway.

Resolution

Dell engineering advises the following workaround if a stop is encountered upon changing the Secure Boot Policy to VMware Boot or Linux Boot.

  • Reboot the system. 
    • Warm or Cold reboot clears the stop issue.
      • Reboot can be performed locally or by iDRAC remotely.
Note: Users that change the Secure Boot Policy back to Standard or Custom will not experience this issue.

Affected Products

PowerEdge C6520, PowerEdge C6525, PowerEdge R250, PowerEdge R350, PowerEdge R450, PowerEdge R550, PowerEdge R650, PowerEdge R650xs, PowerEdge R6515, PowerEdge R6525, PowerEdge R750, PowerEdge R750XA, PowerEdge R750xs, PowerEdge R7515, PowerEdge R7525 , PowerEdge T150, PowerEdge T350, PowerEdge T550, PowerEdge XE8545, PowerEdge XR11, PowerEdge XR4510c, PowerEdge XR4520c ...
Article Properties
Article Number: 000228808
Article Type: Solution
Last Modified: 23 Oct 2025
Version:  3
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.