I have installed Ubuntu 14.04 alongside Windows 10 and it's working properly so far. I have one problem, I gave Ubuntu's partition too much space at the installation and I want to shrink it. I don't know how I'm supposed to do it, but when I go in Windows's disk managment, the 'shrink' option is grayed out, as well as any other options except for delete and help.
Can anyone help me shrinking this partition, because I'm running out of space on Windows and I'm not using that much space on Ubuntu.
Thanks in advance