Hello. My friend is having an issue with his hard drives. I figured I would post here before I have him bring it to me. So I have not seen the problem first hand yet. Either way, what happened was he had disconnected all SATA and power connections to the three hard drives. Due to a new PSU. One was running Windows and the other 2 were just storing his data drives. He has reconnected them all now and Windows boots fine and one of the data drives works but one is saying it is need to reformat in order to be used. He is not running any sort of RAID array, so any ideas off the bat?