x570 Taichi M.2 Samsung 970 EVO PLUS Support?

I have an x570 Taichi, AMD 3900x; I've installed a Samsung 970 Evo Plus M.2 SSD (MZ-V7S1T0B/AM) into M2_3, but the motherboard doesn't recognize it.

Is this to be expected? I am running BIOS 1.8;

I want to have this M.2 SSD be the primary (boot) drive.

Attaching a Samsung 960 SSD via SATA works just fine, and I've loaded Windows 10, thinking there could be an NVMe driver necessary (I could use it as a secondary disk), however the drive is not recognized at all.

Anyone else seeing this?

Thanks

Thank you for the advice. Moving the Samsung 970 to M.2_1 solved it; Windows 10 is installing on that drive as I type this.

Perhaps the issue with M.2_3 is mechanical; the small screw provided for holding down the M.2 card in the 3rd slot may not keep the card fully seated, making recognition flakey.


The M.2_1 slot on the Taichi uses the same screw that holds down the cooling cover on the MB.

Did you unplug all other drives when installing the OS?
You should do that.
In the bios the 970 Evo should appear in the Boot Override section after installation.

Also may be worse to read: How To Install Windows On A PCIe SSD:
http://forum.asrock.com/forum_posts.asp?TID=1236&title=how-to-install-windows-on-a-pcie-ssd

Ray62 wrote: I recommend to place the 970 Evo in M2_1. This slot is directly connected to the CPU, has no dependency to other hardware and will give the best performance, preferred for using as primary boot drive.

What about M2_2? Is it also directly connected to the CPU?

shmerl wrote: What about M2_2? Is it also directly connected to the CPU?

No.

shmerl wrote: And if if it's connected to the chipset and not the CPU (M2_2) are there any downsides in using it? It will make the chipset running hotter?

There should be no (real) downsides. The chipset just has to route all data transfer from the connected devices to it via one 4x PCIe link to/from the CPU. In theory that can be bottleneck. But with a Zen2 here we have PCIe 4 instead of PCIe 3 (old generation boards).

Have a look the a AMD Zen2 launch article or here:
https://www.anandtech.com/show/14161/the-amd-x570-motherboard-overview