Mac data recovery for overwritten files is quite a debatable topic and many people think it can be done and many don't. The files saved on the Mac hard drive occupy certain amount of disk space and the operating system notes the address of it. When the file is deleted accidentally by the user or erased due to the formatting of the drive to resolve any corruption issue then they still remain on the drive. The operating system removes the location info of the file so that other files can fill in to that drive space. So the previous file get overwritten by the new one and you would be thinking of Mac data recovery for overwritten files which is not practically possible. So you either look for a backup utility like time machine to get your data back or you have prevent the overwriting of data before you use the recovery tool. The provided Mac data recovery software will work efficiently to retrieve any lost file that is not overwritten and restore it when you select it from preview. So now when the misconception of Mac data recovery for overwritten files is clear take precautions and download the software.