Hi, Richard Owlett wrote: > root@stretch17oct2017:/home/richard# mount /dev/sr1 /home/richard/Desktop/testcd > ... > > E: Type 'file:/home/richard/Desktop/testdvd' is not known on line 2 in "testcd" is not the same as "testdvd". (Copy+paste error or the cause of your problem ?) Have a nice day :) Thomas