M.2 will not read as storage

[brock101]

I've just recently installed a Samsung 860 EVO 1TB M.2 SSD drive onto my TUF B360 Motherboard, It was installed in the slot above my GPU while i already had a Samsung 970 EVO installed in the lower slot which was working fine before i decided to install this Now when i boot up it uses the 970 as a boot device(what it seems like) and only lets me use my 860 M.2 and my 860 SSD but will not read the other 970 or my HDD. Sounds confusing i know but when i booted my pc up i seen that there are 2 drives that are displayed both my 860's but the other drives are just there as a "CD Drive" Any ideas as to what to do eg something in the boot menu or something would be appreciated 

 

Cheers! 

[Kisai]

10 minutes ago, brock101 said:

I've just recently installed a Samsung 860 EVO 1TB M.2 SSD drive onto my TUF B360 Motherboard, It was installed in the slot above my GPU while i already had a Samsung 970 EVO installed in the lower slot which was working fine before i decided to install this Now when i boot up it uses the 970 as a boot device(what it seems like) and only lets me use my 860 M.2 and my 860 SSD but will not read the other 970 or my HDD. Sounds confusing i know but when i booted my pc up i seen that there are 2 drives that are displayed both my 860's but the other drives are just there as a "CD Drive" Any ideas as to what to do eg something in the boot menu or something would be appreciated 

 

Cheers! 

If they are both M2, you may need to explicitly tell the UEFI bios which one contains the EFI partition to boot from.

 

Point of note, generally the M2 slot closest to the GPU (eg above it) may use the GPU PCIe lanes and force the GPU into x8 mode. So that might not be an issue. However what you might run into is if you have a SATA SSD as well. If you have a SATA SSD you must install the "SATA drivers". If you have M2 drives that are PCIe (not SATA, because they can be SATA too) they have to be configured as "RAID" in most bios's to actually get PCIe performance out of them, otherwise AHCI mode will have them run at the speed of the SATA controller. 

 

What I'm saying is that you should check the exact models of the drives you are using as this would probably explain things. 

[circeseye]

if im not mistaken if you move your other hard drives to different sata slots if they are plugged into 0 and 1. put them in sata 2 and 3. when using gen 3 m.2 you cant use corresponding sata slots, m.2 above pcie = sata 0..bottom m.2 = sata 1

 

[brock101]

58 minutes ago, Kisai said:

If they are both M2, you may need to explicitly tell the UEFI bios which one contains the EFI partition to boot from.

 

Point of note, generally the M2 slot closest to the GPU (eg above it) may use the GPU PCIe lanes and force the GPU into x8 mode. So that might not be an issue. However what you might run into is if you have a SATA SSD as well. If you have a SATA SSD you must install the "SATA drivers". If you have M2 drives that are PCIe (not SATA, because they can be SATA too) they have to be configured as "RAID" in most bios's to actually get PCIe performance out of them, otherwise AHCI mode will have them run at the speed of the SATA controller. 

 

What I'm saying is that you should check the exact models of the drives you are using as this would probably explain things. 

Wicked once i  get home I'll check the exact models then come back here and reference what you've said, If all else fails you'll see me post below this lmao