Clean Win 10 LTSC N Install Isn't Bootable

[redsquirrel0249]

Loaded an ISO of Windows 10 LTSC (21H2) onto a flash (256 GB, fat32) with Rufus, installed no problem, but re-entering BIOS boot menu doesn't give option to boot from the NVMe drive I just installed to. Examining the partitions shows a small Windows partition, but no system partition like a typical installed Windows drive. Do I need to remove the installation tool USB after install for it to finalize properly?

 

I tried reseting with Gparted to GPT on the NVMe, same result. I've never had this issue building, but I've also never built with an NVMe.

 

Specs:

Ryzen 7 7800X3D

GTX 1080

G.Skill TridentZ 2x16GB 6400MHz DDR5

B650 Aorus Elite AX

Supernova 1000G XC

Crucial P2 1TB PCIe 3.0 NVMe SSD