FYI, I installed the 5028D-TN4T/X10SDV-TLN4F BIOS 1.0b, then installed Windows 10 to my M.2 SM951 with BIOS in UEFI mode. It went fine, bootable.There's a new bios for the supermicro X10SDV series that is supposed to make M.2 SSDs bootable (specifically samsung SM951, and likely XP941). They just emailed me about it months after my initial email about there being a bug with it. I guess that's better than never emailing me.
Curious if you have more info the bug. Thanks!