So I have been playing around with ZFS on my test computer before changing all my servers to ZFS.
Currently BOOT device is nvd1p4.
gpart list nvd1
1. Name: nvd1p1
Mediasize: 209715200 (200M)
How to create a zfs drive with gpt labels and send and recv datasets
There is a tutorial on the Freebsd forum about adding gpt labels which inspired this video,
but i cant find the link otherwise i add it here to give credit to the original post