DMDE (short for DM Disk Editor) is a well-known hard disk data searching, editing and recovering tool for DOS, Windows, Mac and Linux platforms (both Console and GUI), developed by DMDE Software from Canada. It is very powerful, and it can effectively recover entire directory structures and files by using special algorithms even in complex situations where many other data recovery software can do nothing.

The causes of loss of data are nothing else than the following several common ones: accidentally deleted files/folders; formatted some partition or the entire hard drive (which often happens during the reinstallation of OS); due to wrong operations (unexpected or forcible shutdown, direct or forced pullout, etc.), the invalid partition table error occurred in hard disk, USB flash drive, SD Card and other storage devices, so that they couldn't be identified or just identified as RAW format.