Question Second NVMe M.2 "not present" in B450M Mortar Titanium

Jun 26, 2021
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Hey Guys,

I've done some reshuffling and upgrades on my drives, after which my nvme drive is no longer detectable.

My motherboard: B450M Mortar Titanium which support 2 x M.2 drives and 4 x SATA drives.

Prior drive setup (all drives working):
  • Crucial P1 1TB on M2_1 slot
  • Samsung 860 QVO 1TB on SATA
  • Seagate Ironwolf 4TB on SATA
Current drive setup:
  • Samsung 970 Evo Plus 1TB on M2_1 slot (PCIe 3)
  • Crucial P1 1TB on M2_2 slot (PCIe 2) [Not Detected]
  • Samsung 870 Evo 2TB on SATA
  • Samsung 860 QVO 1TB on SATA
I can't find the Crucial drive on Windows, and when going into the BIOS, I see that the M2_2 slot is showing up as "not present". The drive was definitely working before I swapped stuff around, so it's not an issue with the drive.

Anyone familiar with this board? Do I need to do something within the BIOS?

To add, I've only used the PCI_E1 slot (GPU) and have none on the others.
 
Last edited:

itrip

Commendable
Feb 4, 2019
236
18
1,615
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What happens if you switch m.2 drive's positions, does it work both then? or only one again? then there must be some setting not turned correct in the bios or a fault with your motherboard, maybe a bios update is required.
 

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