I tried installing Ubuntu 14.04 (dual boot with windows 7), but the installation failed. I tried again and was successful, but then realised that I still had the partition from the previous attempt. I have tried to use gparted to shrink this partition in order to expand that of the successful installation, but it won't allow me to do so (resize option greyed out). I also tried deleting all the items contained therein - they no longer show in nautilus, but the free space has not increased). How can I combine these two partitions?