[m-p-3]

It could be that your ISO doesn't have the required drivers for the storage controller to see the actual SSD.

It's a pain that sysadmins knows all too well when deploying a corporate Windows image through SCCM/MECM, and why they need to often update the embedded drivers in the Preinstallation Environment.

[5e92cb50239222b]

Sure, but it also doesn't work when running a proper Linux distribution from that same SSD, exactly like the author of the article described.

It's also an NVMe drive. I have a pretty vague idea of how PCI-Express drives work, but don't they go directly to the CPU without any storage controllers? It's more of a IDE/SATA/SAS/whatever thing.

[m-p-3]

It could be behind something like Intel RST (Rapid Storage Technology) or VROC (Virtual RAID on CPU).

Maybe you could turn that off in your BIOS settings if you don't specifically need the feature.