How to prevent the "It looks like you started an upgrade..." prompt on non-clean drives?

[DAT]

Hi everyone,

I recently customized a Windows 11 ISO using NTLite.

• On a clean/blank drive: The installation goes flawlessly with no prompts.
• On a drive with an existing Windows OS: I get the setup prompt shown in the attached screenshot ("It looks like you started an upgrade and booted from installation media...").

Since I am trying to make this install as unattended and automated as possible, this pop-up blocks the process. I have two questions for the community:

1. What is the best way to bypass or prevent this message from appearing when booting from the installation media on a drive that already has Windows installed?
2. Is there a specific setting or component in NTLite that I might have removed (or should configure) to avoid this behavior, without breaking other essential features?
   
   

Thank you in advance for your help!