Principle about Data Recovery

Can we recover deleted files in Windows or Mac? The answer is Yes! The lost files can be retrieved from Windows and Mac computer in many ways. Now, let's figure out why we can recover the deleted files from computer. 

Firstly, simple deleting just would move the items to recycle bin, which offers "Restore" option to get the data back to the original position.

However, if you remove the files from recycle bin, it is in need to move to deep scanning and recovery tool for help. Those permanently deleted files cannot be found on your computer but they actually have caches saved on the hard drive. Generally, a hard disk is divided into many storage cells, called sectors. As you create and edit a file on PC, the content of the file is written into multiple sectors and a pointer is created in the system to record the position of the sector where the file begins and ends.

When the files are removed permanently, Windows just deletes the pointer only, while the file data is still saved in the sectors of the hard disk. Thus, the permanently deleted files can be recovered with a recovering software, like FonePaw Data Recovery. Nonetheless, the PC won't preserve the deleted files for a long time. As a pointer is deleted, Windows will mark the sectors that the deleted file occupies as free space, where any new file can be written into and the new data would overwrite the deleted item. Once the sectors are used by new files, the deleted file will be covered and cannot be recovered. 

To successfully perform data recovery on your computer, you should follow the rules here.