In brief- I had 14 installed and then did a 'hands off' install of 17, and now have the situation you see in the screenshot. I guess sda7 is the 14 partition and sda5 is the 17 partition. What is the empty /dev/sda1 partiton ? can I delete that and the 14 partition after I have transferred the last of the data to the 17 partition via an external USB drive? My concern is that sda7 should now only have the old 14 OS and a few text files, so why is it showing 72.58Gb ? Dont want to lose my stuff ! Thanks lots.