Nexus 10 Recovery

In a moment of inattention I deleted some important folders on my nexus, would like to get them back. I have the tablet mounted as F: When I input F: in recuva it says 'unable to open drive'. Also the drive doesn't show under 'all local disks'. How can I get recuva to work for my nexus 10 please?

How do you have it mounted as a drive letter? Android made this impossible versions before the release of that nexus device.