connect with a serial cable to the filer,
power on the system
when ONTAP is booting "press ctrl + c"
now you come in the Mainanance Mode
(1) Normal boot.
(2) Boot without /etc/rc.
(3) Change password.
(4) Initialize all disks.
(4a) Same as option 4, but create a flexible root volume.
(5) Maintenance mode boot.
Selection (1-5)? 4
press option 4!
i meen Y, Y
an you became many points on your display.
initialize all disk is finished the FAS running in the setup.