Whenever I run a deep scan on a cleaned harddrive, Recuva reports a clean drive, except "(6,494 ignored)" files. There is no explanation of what or where these files are, nor why they were "ignored." Not sure, but it seems like the number "6,494" is constant. Does anyone know anything about this? I don't feel confident about security without knowing more. Any way to identify these files, and opt either to ignore or delete them?
Yes, they are undeleted, zero-length, or system files. In Advanced Mode open Options/Actions and check the relevant boxes. You may get away without having to rescan.