The short of it
- Gigabyte H370 HD3 motherboard, 8 GB RAM, Core i3 Gen 8
- "Other OS" (Not WIndows 8/10) selected at BIOS
- Using Linux and dd command to create live usb on Sandisk Ultra Flair 16 GB
- Second Sandisk 16 GB available in usb slot and recognized during XigmaNAS startup
- 3 different SATA devices on two different controllers (onboard and adapter), all recognized during XigmaNAS startup
- Boots fine, press 9 at the menu - every install option available results in "Failed to detect any CDROM / USB device."
- I've tried every combination of enabling / disabling CSM in the bios, and changing UEFI / Legacy support.
- I've tried different methods of creating the Live USB (mkusb, manually creating partitions, etc)

