I installed Ubuntu 14.04 on a Dell XPS 420 that has 2 hard disks of 750GB each. There is still plenty of room on the first disk. I am using it to store old photos and music so it will soon fill up.
The second disk wasn't formatted during the Ubuntu installation so I used GParted to format it in one volume as ext4, but then found I don't have permission to copy any files onto it as it belongs to Root.
If I keep going and fill up the first disk will Root Ubuntu automatically overflow my home folder with pictures and music onto the second disk please? Otherwise is it ok to reformat the second disk as NTFS and store stuff on it but not in my home folder under