Program use to recover lost data from all NTFS and FAT, also compressed NTFS. It is very good and efficient recovery program containing standard recovering procedures and several additional elements. Application has very fast disc scanner.Scanning algorithm is very effective and every information from hard drive is absorbed only once and it takes 2 to 10 times faster to search. For bigger partitions scanning is even shorter. DDR is only program recovering data lost by 'shift-delete.Application also allows to recover any data fragments from hard drive, listing HDD through many criterion, serching data directly on hard drive. Only needed informations are gathered and that has big influence in program working efficiency. DDR has good support working allways for engine to have enough power. Also DDR is about to be multitasking application, allowing to viev scanning results in real time and recover any found data needed.