Partition an M.2 NVMe?

This is my old rig.
The new rig has a Asus Prime Z390-A motherboard.

Good to know it is all supposed to work as expected. Thanks.

I will do some more testing and report back.
Gotta go now!

I read a couple places that said that the NVMe will not show up in the boot menu or in the BIOS bootable drives until an EFI System partition has been created on one of those devices. Does this sound right?

I've noticed that nothing appears in the BIOS Boot Priority list (EZ Mode) until I enable CSM and then have a bootable CD in the optical drive, or a bootable USB. Then the list gets populated. It seems only devices with either Legacy Boot or UEFI boot on them will show. Makes sense.

OK - got some more info.
With CSM enabled, The NVMe and the optical drive show up as bootable devices in the BIOS.





When I disable CSM then no devices show up as bootable.

When I go to disable CSM, this message is interesting, and may explain a few things:



I am going to assume that when you install W10 it installs the generic drivers and all of this becomes moot. And I assume that any drivers the M.2 needs are in the chipset drivers.
I may need to enable CSM to get the W10 installer to find the NVMe.

Unfortunately, even with CSM enabled, and the NVMe showing in the BIOS boot menu, the NVMe still does not show up in Partition Wizard. Do you think this is related to the driver issue, or the EFI SYstem partion issue I mentioned above?

I should. But my replacement RAM comes today and I was going to wait to get that squared away before doing any Windows stuff. (yes, OCD!)

In the meantime I am just doing experiments and seeing what's what. As I said, being new to this tech means I need to climb the curve.