for reference
1) boot the controller
2)wait for the first stage of the boot process to complete (cpxload)
3) interrupt the second stage by pressing enter when prompted
4) enter format 0:2
5) wait a very long time for this to complete.
6) reload the controller and preboot checks will rewrite data to the config partition allowing you to start the config wizard from CLI
it works with 72xx and 70xx controllers serie
thank you scottdoorey