EFI Bootstrap Question on 13.0

john john at johnrshannon.com
Mon Apr 19 14:30:18 UTC 2021

I updated to 13.0 successfully. I then upgraded ZFS because I found that 
was necessary to import a ZFS pool mounted on iSCSI without forcing it. 
Everything seemed to be working correctly until I upgraded a handful of 
packages that changed since Friday morning.

The system won't boot. It stops in startup.nsh.

After upgrading ZFS I updated the bootcode according to the warning in 
the Handbook. While the handbook says to run:

# gpart bootcode -p /boot/boot1.efifat -i 1 ada1

I didn't see "boot1.efifat" in /boot so I executed instead:

# gpart -p bootcode -p /boot/boot1.efi -i1 nvd0

Did I reference the wrong file for the bootcode?

I can mount the filesystem from the live CD and verify that I'm using 
UEFI boot and that partition 1 is the EFI partition.

Recovery recommendations?

John R. Shannon
john at johnrshannon.com

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