User eerielinux follows up on the earlier article (Setting up a FreeBSD/OpenBSD dual-boot with full disk encryption), using ZFS on root on the installation in this instance. Check out their findings in the link below.

eerie263

In the previous post I wrote about how to get a computer up and running with a dual-boot of FreeBSD and OpenBSD while using full disk encryption. This worked quite well but a bit later I decided that it would be a good time to do the FreeBSD installation again – this time going the modern way and using ZFS on root. This has led to a surprisingly large amount of problems. In the end I got a working system that uses ZFS, so that I’ve actually got an alternative howto for FreeBSD (the OpenBSD part remains the same as before and can be looked up in the previous post). But it’s all a bit different from what I first thought it would be.

Original post: https://eerielinux.wordpress.com/2016/04/30/openbsdfreebsd-zfs-dual-boot-thoughts-about-gptefi/