I got a
filesystem root has 0 disk space error while upgrading Ubuntu, so I've opened Windows 8 and shrinked C drive. Now, I have a 100 gb unallocated space but I see that I cannot merge it to sda9(which I want to extend).
It is like a puzzle, and I cannot solve it! Any help? (Note: I've read similar posts and questions but still I couldn't find the right thing)