Thank you John for your answer, even if it didn't solve the problem. It seems the external drive needed more space.  The user cleaned the drive and all is well now.  Maybe the free space was too fragmented? Gilles Paquette Le 2019-08-02 à 19:58, John Steed a écrit : > To Gilles Paquette > > I do not know what would cause the slow backup. > > If it does a backup without pictures and text and media files, does that go fast, or slow? > > John Steed >