Hi there! I'm already using EOS with much more free space, but now unfortunately I'll need to install Windows 10 over Windows 7 (while having it installed on dual boot alongside EOS).
It seems that there's no other way to do this without "losing" both OS first, so doing a backup would be Timeshift's job. I already have an USB to boot Win10, and already installed Timeshift through PPA following the specific thread about it to do the backup. Now I'm thinking I have to use Gparted again from USB in order to reallocate HDD space to backup.
Better close this thread as it would get too off-topic, right?