Unable to install with kern.geom.debugflags=16

[pyrodex]

I was just trying to do a fresh install of 2.4.0RC using a SuperMicro A1SRM-2758F motherboard and had the following error everytime I tried to do an ZFS (AUTO) install.

gpart: geom 'ada0' operation not permitted

Doing some research I tried various things since the disks were already part of a pfSense 2.3 mirror but had no luck until I came across the following command online.

sysctl kern.geom.debugflags=16

Once I entered this from the shell I able to perform any functions to the disks and install/reboot/config 2.4RC without any issues.

I wanted to report this since I saw some issues on the board surrounding UEFI but not sure if those are related to my issue.