Booting node for first time. I can get to maint mode and perform option 4 (clean config & initialize disks). It will go through and prompt -
/mroot directory doesn't exist or is it not writeable... aborting coverage dump - then it'll loop with reboots.
It sounds like there may not be any disks assigned to the node you are trying to option 4.
If you boot in to maintenenance mode you should be able to see which disks are owned by the node.
You need to make sure at least 3 disks are owned to create aggr0.