Slide the door into the wall. Remove any track or guides on the floor with the screwdriver.
Close the door all the way but do not latch it shut.
Run a sharp utility knife around the edges of the door moulding to cut away any paint or caulk.
Use a pry bar or claw hammer to remove the molding from around the edges of door. Place a wood or plastic shim underneath the heel of your tool to help protect the wall while you're working.
Have an assistant stand on the inside of the door and push it towards you. Grab the bottom of the door and continue to lift until it is at a 45 degree angle.
Press gently on the door to slide it up and off the tracks at the top of the door. Pull the door towards you