Converting the MBR partition table to GPT in plan to move to UEFI

[kevdogg]

I'm a little confused how to go about things

I've have to bhyve vm's (Arch, Ubuntu) created with iohyve on FreeNAS 9.10.2. Both were setup using a MBR partition table using the grub-bhyve loader. My ultimate goal is to convert to a GPT partition table and use UEFI to boot the jails. I've done this process before on bare metal machines using gparted to resize partitions, and a UEFI partition, etc, however I'm stumped how to accomplish this task using iohyve/byhve. I access by two instances currently over ssh and I used the ubuntu server.iso and arch.iso originally (both non-graphichal) to partition and create the installations. Trying to read through the man pages I noticed the two options:
iohyve load
iohyve boot

However these options weren't really discussed further in the documentation. Do I boot using an install disk with the iohyve boot option?

Thanks for any insight into the matter.