Installed NVME now mechanical drive is missing.

Vidar · 4 Jan 2019 at 23:06

As above, I just installed my 500gb 970 Evo but now my mechanical storage drive is not being detected in windows.

I've initialised the evo and given it a different drive letter and restarted but my D drive is missing.

I'm on the Aorus Z390 master with a 9900k if that helps.

lee32uk · 4 Jan 2019 at 23:37

Maybe the M.2 slot shares bandwidth with some SATA ports ? Have you tried a different SATA port for the HDD ?

Vidar · 5 Jan 2019 at 01:02

And fixed, not sure what the issue was exactly but swapping the sata ports around seems to have done the trick. Thank you @lee32uk

yashiro · 6 Jan 2019 at 17:33

Read page 33 onwards of your motherboard manual (CH1 - Internal Connections). Each M2 header shares bandwidth with SATA ports or a PCI slot. ie plugging in an M2 device slows or disables other things on the board.

WantoN · 6 Jan 2019 at 22:44

Came in to post this. Generally when you install an m.2 nvme two of the SATA ports are disabled to provide the necessary bandwidth.

Weirdly I just had a SATA data cable spontaneously die on me; restarted after installing software and the drive was gone, never seen it happen before. Had a bit of a panic that I'd installed something dodgy at first.

Glad you sorted it OP.

yashiro said:
Read page 33 onwards of your motherboard manual (CH1 - Internal Connections). Each M2 header shares bandwidth with SATA ports or a PCI slot. ie plugging in an M2 device slows or disables other things on the board.

We may not have upvoting on here, but a post like this deserves some kudos for it's specificity and epic helpfulness.

rocketman · 9 Jan 2019 at 20:39

WantoN said:
Came in to post this. Generally when you install an m.2 nvme two of the SATA ports are disabled to provide the necessary bandwidth.

Weirdly I just had a SATA data cable spontaneously die on me; restarted after installing software and the drive was gone, never seen it happen before. Had a bit of a panic that I'd installed something dodgy at first.

Glad you sorted it OP.

We may not have upvoting on here, but a post like this deserves some kudos for it's specificity and epic helpfulness.

Ditto.

drakulton · 11 Jan 2019 at 21:34

I wish I'd known about the m.2 slots sharing bandwith with the sata ports earlier. I had a spare, delidded 4690K and was looking for a board to drop it in. Picked up an Asus Z97-P off the bay for
£30, as it was for parts or not working. One of the sata connectors had been ripped off the board and left the connector pins randomly sticking out of the mobo.
Managed to de-solder most of the pins, and drill the remaining ones out. Soldered on a spangly new sata connector, nice tidy job too! I had the m.2 installed on the board and just couldn't figure
out why the repair hadn't worked when I connected up a second drive to it.