Apparently #962 never really fixed the issue, just avoided a failed assertion.
Fix it by making a disposable copy of the gptzfsboot file, and truncate (or rather expand) it to 512K before passing it to mkimg as the freebsd-boot partition, in order to keep the same partition size that bsdinstall uses.
Apparently #962 never really fixed the issue, just avoided a failed assertion.
Fix it by making a disposable copy of the gptzfsboot file, and truncate (or rather expand) it to 512K before passing it to mkimg as the freebsd-boot partition, in order to keep the same partition size that bsdinstall uses.
Fixes: #1098