Cloned drive but how to make it the boot drive?

[Slam]

Have successfully cloned the HDD to the nvme SSD using Samsung Magician software.

Set new drive to online. Got a warning about the drive having a signature collision

Rebooted but laptop still booting from old hdd

Boot order in Bios settings just gives one option of Windows Boot Manager

Windows disk manager shows old drive as having the active partition and I can't change this

- what do I need to do?

Just wipe the old HDD? Will windows automatically find the OS install on the nvme drive?

 

[Slam]

thanks!
I took out the old hdd and the pc booted up on the ssd fine.

I then tried to hot swap the hdd in but it wasn't recognised so I've just taken the drive out. will format it in a caddy and then install as a clean drive.