I used the Foremost tool for data recovery. It was taking too long so I decided to quit it. I closed the terminal and now it has left some folders behind and they have a lock sign on them. I want to delete them because they are occupying about 100 GB of my hard drive. I can't delete them even by becoming root.
sudo -s rmdir recoveredforemost
I made that folder
recoveredforemost to store recovered data? How do I remove these folders?