How to overwrite all deleted files?
We already known that overwrite will erase all the trances of deleted files, but we don't see any options in the right-click menu of a file, it only shows delete instead. How can we perform a complete overwriting on all the deleted files so that data recovery software will not be able to get them back?
Use ByebyeData Eraser
it is a program capable of erasing hard disk drives, partitions, free space, files and folders using tens of erasing standards. Erase free space is the function we're gonna use to overwrite all deleted files traces, if you have emptied the recycle bin and downloaded ByebyeData Eraser, you can installed it and run the software as Administrator, the following steps would help you no matter you're using Windows XP, Vista, 7, 8 or Windows 10:
1. In ByebyeData Eraser, left navigation bar, click Erase free space tab and you can see the security column and the list section.
2. Select one algorithm from the listed fourteen methods in 4 categories: Simple overwrite, advanced overwrite, complex overwrite and very complex overwrite methods.
3. Check the drive or drives the deleted files were stored, C Drive, D, E or F Drive, all of them can be selected.
4. Click Erase Now and Eraser will need you confirmation, before you click Yes, check the erasing list again to see if all the drives have been selected or some drive doesn't have to be erased. As of the function Erase free space, it will not touch any data exiting or you're currently using, it just deal with unused space and deleted space, so don't worry about any using data losing while use the function. It takes more time to complete the erasure, however, if more drives are chosen.