Apologies if this is in the wrong section but it seemed as good as any. Ok, so I've just upgraded my NAS unit and disks. All seemed good until I discovered that some folders had mysteriously disappeared. No fear, I thought, as I still have the 2 drives I swapped out with the original folders still on them. I plug one in to my rig and the BIOS happily acknowledges it's existence. Windows 10 however seems less sure of itself. Disk Management shows it with all it's partitions, volumes, etc, but the drive just isn't explorable. The unit was a Synology DS212J and the drives are WD20EARX. So, is this a Windows 10 issue, some kind of proprietary software that Synology used when in the unit or something else I've overlooked? Any help would be appreciated. Cheers James