[SOLVED] Old Windows 10 partitions showing up at boot

[McLovinHawaii]

I have just done a clean install switching from an older SSD to a new M.2. I have uninstalled the old Windows 10 partition and formattet all 3 drives. However when I boot up my PC I get to the screen where I have to choose which Windows partition I want to use. There's 4 in total and 3 of them are just there but not working. How do I remove those 3 "leftovers"?

 

[USAFRet]

When you installed on this new M.2, did you have the other drives still connected?

 

[McLovinHawaii]

Yes they were still connected. I've managed to remove two of the unwanted partitions using powershell but one is persistent and won't let go

 

[USAFRet]

Yes they were still connected. I've managed to remove two of the unwanted partitions using powershell but one is persistent and won't let go

Right.
And if you remove that last one...your system will no longer boot up.

This is one of the annoying issues with installing WIndows. You really really need to have only that one drive connected when you do the install.
Otherwise, the boot partition ends up on some other drive. And if that drive already has one, it just gets merged in, and you end up with a messy menu choice.

Since this is a brand new install, I'd just redo it.
Physically disconnect ALL other drives.
Install on the M.2
Later, reconnect those and delete partitions as needed.

How To - Windows 10 clean install tutorial

If you are looking for the Windows 11 Clean install tutorial, you can find that here: Windows 11 Clean install tutorial (Click here) Otherwise, welcome to the Windows 10 Clean install tutorial This tutorial is intended to help you, step by step, to perform a clean install of Windows...

forums.tomshardware.com

 

[McLovinHawaii]

Oh boy.. 😕

Thanks a lot for your help, I was utterly confused as to what had happened