Strange: There does not seems to be ONE COMMON way to detect devices....
             * Card "Sony SD, HC I, 16 GB, CLASS 10, 94 MB/s" reports itself as an internal device, but ejectable:
             - Read only = 1
             - is internal  = 1
             - is removable = 1
             - is ejectable = 1

             NOTE: There is a file NIKON001.DSC stored hidden on the card.