1. Load ImgBurn!     2. Click the 'Write files/folders to disc' button.   Note: This is basically the same as switching the 'Mode' to 'Build' and setting 'Output' to 'Device'.     You should now see a screen like this:     3. Insert a blank (or erasable) Blu-ray disc in your burner.   Note: The message in the status bar should now say something along the lines of 'Ready'.   4. Add the files/folders you want to burn to the 'Source' box.   For a Blu-ray video disc that'll be