Bernd<p>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.<br><br>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.<br><br>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?<br><br>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.<br><br>Thanks.<br><br>Please boost.<br><br><a href="https://nb-fedi.de/tags/efi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EFI</span></a> <a href="https://nb-fedi.de/tags/uefi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>UEFI</span></a> <a href="https://nb-fedi.de/tags/boot" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>boot</span></a> <a href="https://nb-fedi.de/tags/bios" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>BIOS</span></a> <a href="https://nb-fedi.de/tags/supermicro" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Supermicro</span></a> <a href="https://nb-fedi.de/tags/netbsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NetBSD</span></a> <a href="https://nb-fedi.de/tags/homelab" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>homelab</span></a> <a href="https://nb-fedi.de/tags/server" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>server</span></a> <a href="https://nb-fedi.de/tags/efiboot" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>efiboot</span></a> <a href="https://nb-fedi.de/tags/uefiboot" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>uefiboot</span></a> <a href="https://nb-fedi.de/tags/supermicrox9scm" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SuperMicroX9SCM</span></a></p>