I think the EVO 850 are all SATA, not PCIe. But in general, yes, they should at least appear on the bus...<p>Interestingly, when this happenned to me, with some &quot;ADATA&quot; SSDs they would still negotiate a link speed, so their PHYs did get initialized. But Linux didn&#x27;t get any further information from the disks, device type, name capacity... So maybe their firmware crashed halfway through initializing the SSD.