Hi, I have a Samsung 970 EVO M.2 NVME 2280 SSD connected to PCIe with an adapter and I’m trying to use it as a boot drive. 

It is recognized and usable when my PC is on, I have initialized the drive as Master Boot Record NTFS, and I even copied an image of my regular drive into it. But I can’t get the computer to use it as the boot drive. When I unplug my previous drive and try to boot it says “Hard Drive Not Found.” I tried to find it in the BIOS and even updated the BIOS firmware, but no dice. 

Is it possible to use an M.2 NVME as a boot drive on an Optiplex 7020 via a PCIe adapter? If so what am I missing?

Thanks!