It more detail.
(1)The NAS bootable or not bootable.
- Nas bootable but program NasNavigator2 don't see LinkStation.
(2)Confirm current disk conduction healthy or bad.
- Customer bought new HDD
(3)The customer have not added disk2,disk3 and disk4 before. Slot2, Slot3, Slot4 are empty. Is that right?
-Yes,customer used only one HDD is slot1 and try used slot2,slot3 and slot4 but don't connect .