...Start a scan process and see the overall situation. The bigger the elements on the view, the bigger are folders and files on your disk. Do you need more detail on a big folder? Just single click on it. The selected element will be detailed with its content. If you need to understand why no more free space is left on media, keep following bigger elements. Maybe you want to focus only on particular file types. Just type the file type on the filter field and press enter. The view will react and show you only JPEG files.