I have Windows 10 and Ubuntu 14.04 dual booting from a partitioned SSD. I decided I need a little more room for Ubuntu. In GParted, the 12.50GB which I shrunk from Windows (in Windows) shows as unallocated.
When I right-click on my Ext4 Ubuntu partition (/dev/sdb5
) and select Resize/Move, the slider does not allow me to increase the size (to take over the unallocated space).