Question NVMe m.2 ssd disappears after restart

[Agguri123]

Hello guys.i build a system with a primary samsung 970 evo 250gb nvme ssd and a secondary adata sx6000 pro 1tb.i also have a samsung 860 evo 250 gb sata ssd on gigabyte aorus z390 master.my problem is that the pc starts normally but if i need to restart the system gets me straight to bios and the samsung 970 evo is disappeared.in settings nvme configuration in bios it shows only the adata.in my settings i set the boot priority as 1st to be the 970 evo and i also have AHCI enabled and csm support off(this happens even if csm is on).if i remove the adata the samsung never disappears but if i have both on the problem starts again.samsung is on the m2p slot and adata on the m2m.the sata one is on the sata 3 port which doesn't bother anything.

My setup is
I9 9900k
Gigabyte z390 aorus master(f9 bios)
Samsung 970 evo 250gb(primary)
Adata sx6000 pro 1tb(secondary)
Samsung 860 evo 250gb sata ssd
Gskill trident z 32gb
Evga gtx 1080 ftw2
Evga supernova g3 850w

Thanks in advance

 

[Diddly]

You could try putting the SATA drive on a different SATA port - check your Mobo manual to see if any SATA ports get disabled if you use a M.2 drive.

 

[Agguri123]

You could try putting the SATA drive on a different SATA port - check your Mobo manual to see if any SATA ports get disabled if you use a M.2 drive.

Hello mate thanks for the reply.the manual says that if i use the m2m slot which i use it disables sata 4 and 5 ports.im using only sata 3 thats why im confused