Why do you need the Disk Doctors File Shredder for your home or business? When users delete files on computers running Windows the file is either placed in the recycle bin or if the file is deleted using a shift+del key combination it is removed from view completely. Once emptied files from the recycle bin are also presumed removed from the computers hard drive. But the content of these files remains completely intact in the space on the drive they were written to. All that has really happened is that the allocation area or the index of the file system (FAT or NTFS) marks the area used by the deleted file as empty.