Disable Secure Boot on EC2 Windows 11 to enable Windows Test Mode

Question

Hello!

I'm looking for a way **How to disable Secure Boot on Windows 11 EC2 instances or AMI images. **
I need to enable Test mode in Windows 11 in EC2 to be able to test `test-signed code`. To enable the mode, Secure boot has to be disabled. I did not find any way how to disable Secure boot on EC2 instance or in my AMI image.

I tried several way how to get into Advanced Startup directly from Windows:
- hold shift + Restart - does nothing
- via Setting and Advanced Startup - not this option in mine system
- CMD `shutdown /r /o /f /t 00` - invalid argument /o

My OS Version is: Windows 11 Pro 10.0.22621 Build 22621

I also tried to upload OVA (exported from esxi) to S3 and to AWS EC2 via import-image: 
`aws ec2 import-image --description "description" --disk-containers "file://containers.json" --region  --boot-mode legacy-bios`,
but the boot-mode was automatically changed to "UEFI"

Please, can anybody help with this? 
Many thanks!

Damini · Answer

Dear Customer , Hope you are doing good!!

I would like to seek a minute here to tell you that When VM Import/Export detects a Windows 11 image, it configures the import task with:

The BootMode set to uefi by default – This behavior is a change to the import process for Windows images as Windows 11 supports only UEFI. For previous versions of Windows, VM Import/Export defaults to the Legacy BIOS boot mode.

***Unique to Windows 11 imports, VM Import/Export automatically enables UEFI Secure Boot using Microsoft keys and NitroTPM.

Kindly go through our blog which will give you more information around this : https://aws.amazon.com/blogs/modernizing-with-aws/bringing-your-windows-11-image-to-aws-with-vm-import-export/

Thanks & Regards, 
Damini

Disable Secure Boot on EC2 Windows 11 to enable Windows Test Mode

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