There are a few different ways that you can go about recovering overwritten files with Disk Drill. One way is to use the "Search for lost data" feature, which will scan your hard drive for any lost or deleted files. Another way is to use the "Recover from image" feature, which will allow you to recover files from a disk image. Finally, you can use the "Recover from Time Machine" feature, which will allow you to recover files from a Time Machine backup.