After BIOS-Upgrade, I can't (UEFI-) boot anymore

Tue Nov 17 23:15:03 UTC 2015

Hi,

I have a HP DL380 G9, that I boot from an internal SmartArray Controller provided RAID1 into FreeBSD 10.1 amd64.

I have upgraded the BIOS to the 2015-10 release and on reboot, I now get a message that

/boot/loader.efi 

can’t be found.

I can legacy boot it into mfsbsd and the file is there.

How can I fix this?
Or how can I debug this and why is this failing in the first place?

Rainer