FYI, if you forget how to update your #FreeBSD bootloader, remember that your search results will be flooded with out of date posts and posts.
This thread is full of useful information:
https://forums.freebsd.org/threads/update-of-the-bootcodes-for-a-gpt-scheme-x64-architecture.80163/
Just about everything else that came up in top search results was anti-helpful.
This specifically helped me out, after I used an out of date method that blew my bootloader away:
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newfs_msdos -F16 /dev/nvd1p1
mount -t msdosfs /dev/nvd1p1 /mnt
mkdir -p /mnt/efi/boot
cp /boot/loader.efi /mnt/efi/boot/bootx64.efi
umount /mnt
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It's one of those things that I don't do often enough for it to become habit.
