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24 Posts

06-17-2009

Finland

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T490/T590 How to change secure boot from setup mode to user mode

2019-10-21, 8:03 AM

Hi, 

 

just received a bunch of T490 laptops. 

We are installing them from a customized image with MDT. For this we first change the secure boot mode from user mode to setup mode. 


After the installation we'd like to change it back to user mode ( I assume this is the correct approach). How can we do this?

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6071 Posts

10-29-2009

NC

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Re: T490/T590 How to change secure boot from setup mode to user mode

2019-10-21, 16:24 PM

There are two ways:

1.  BIOS Setup -> Security -> Secure Boot -> Restore Factory Keys

or

2.  Install your own Secure Boot keys using the PowerShell SecureBoot cmdlets.

 

I'm curious why you think you need to go into Setup mode.  This is unusual and I'm not aware of anyone else doing this to perform an MDT deployment.

 

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24 Posts

06-17-2009

Finland

51 Signins

403 Page Views

  • Posts: 24
  • Registered: ‎06-17-2009
  • Location: Finland
  • Views: 403
  • Message 3 of 4

Re: T490/T590 How to change secure boot from setup mode to user mode

2019-10-22, 7:27 AM

Hi, 

 

going into Setup mode was clearly a false assumption. 
Restoring factory keys worked. 

 

What would be setup mode used for?

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6071 Posts

10-29-2009

NC

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Re: T490/T590 How to change secure boot from setup mode to user mode

2019-10-22, 12:12 PM

Setup mode is used to install your own keys using the Powershell SecureBoot cmdlets.  In real world, almost nobody does this.

https://docs.microsoft.com/en-us/powershell/module/secureboot/?view=win10-ps

 

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