I've installed 8.0-RC3 on my system with this tutorial:
Everything worked fine on my backup server until I wanted to update to the 8.0-RELEASE.
I did a
freebsd-update upgrade -r 8.0-RELEASE
After that I had to reboot my machine with the new kernel, but the bootloader gave me the "can't load kernel" error.
I checked with fixit the zfs mounts and everything looks fine for me.
In /zroot/boot/kernel is the new kernel and it also exists a /zroot/boot/kernel.old directory.
I've searched with google and in this forum, but did not found any solution for my problem.
I've used Debian and Gentoo for years, but FreeBSD is fairly new to me.
So, any hint or help would be very much appreciated. I'm searching for many nights and don't see any solution.