Awesome Igor, much appreciated. That has saved a whole lot of time rebuilding u-boot and I completely missed that in the documentation .... and I can now see the SATA SSD:
smartctl -a /dev/sda
=== START OF INFORMATION SECTION ===
Device Model: SAMSUNG MZMPA128HMFU-000H1
Fantastic, now I have plenty of storage for the Router / MITM / Docker host.