Hello
In meantime I checked server boot ILO F8 menu and removed previous admin account.
Still no success with recovery DVD but somehow
but
I got into menu named Option ROM Configuration for Arrays ver. 8.50
Controller P420i.
I guess I pressed F10, is it correct menu for F10?
I deleted Logical RAID menu and wiping now disk which was not accessible so far.
Or is there some other key for Array settings?
If still needed, I check the NAND formatting tomorrow.
Thanks for support.