I can't figure out what's wrong with my EFI boot setup. I have several Dell servers, and they boot fine from a SATA SSD via UEFI.

But my SuperMicro X9SCM-F (latest BIOS) doesn't like it. I can boot via MBR (legacy BIOS) without problems. And UEFI will find, and boot from, a USB CD-ROM (NetBSD iso image), and can also boot into the built-in UEFI console, but doesn't like my SSD.

Is there more to it than having a gpt with a 1MB-aligned FAT-formatted partition of type "efi", which contains "efi/boot/bootx64.efi", the latter being the NetBSD EFI bootloader?

That always seems to be have done the trick on other machines, but not this one. Maybe someone has an idea or can ask the right question.

Thanks.

Please boost.

#EFI #UEFI #boot #BIOS #Supermicro #NetBSD #homelab #server #efiboot #uefiboot #SuperMicroX9SCM