Drive permissions

I just wiped my Windoze partition (it was an old and incomplete installation of Windoze) and formatted it ext4 (using GPartEd). However, when I attempted to use the drive, I found the permissions were set to Root Only.

Using Nautilus, I managed to move the files I wanted onto the drive. Now those files are locked. (Yes, I can use Nautilus to move them back... but that means I still do not have that extra drive space available to me.)

What did I do wrong? What could I do differently? How do I use this drive partition?