After formatting HDD and then attaching cameras, I get "VIDEO LOSS' on all 4 cameras. When I go to Main Menu and select the Hard Drive option, I keep getting 'NO ROOT' message on all selections except the playback. When I formatted the HDD, I got the correct messaged whereas I clicked on the 'OK' button and thought everything was good. Can you instruct me how to get past this 'NO ROOT' problem

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