Hi @r00ta thanks a lot for checking this and confirming it should work.
We’ve replaced the boot disks and it seems that fixed the issue.
For anyone having this issue in the future, here are the details:
Dell R630 (BIOS 2.18.1)
PERC H730P Mini (firmware 25.5.9.0001)
KINGSTON SKC6002 (rev S4500105) - Issues booting (failed state)
KINGSTON SEDC60/450/500/600 - no issues
With the SEDCxx disks, the “Initializating firmware interfaces” takes <5 seconds.
The UEFI firmware will show it can’t find the /efi/... files but the hint is that it’s not complaining about missing files but “no device found”. The mention of “device” should redirect the troubleshooting to the physical disks and not to the filesystem, PXE or boot options. It took me a while to realize this because I was focused on the filenames it was complaining about and sometimes I would reboot the server and the issue wasn’t present… just to happen again in the next reboot.
I have 5% less hair in my head, thanks Kingston and Dell 