The data recovery is the process by trying to make is damaged or deleted data on a disk such as a hard drive readable again. In some cases, it is not only corrupted data structures. It's not rare that the media is defective and the data it contains can not be easily read. In such cases, we can save the data. The causes of data loss are numerous. The most common reasons include the accidental deletion of data, formatting the disk, an attack by computer viruses or technical defects of the storage medium. Not quite as often the data is going through a fire, water damage or lost in an explosion.
The simplest and most feasible method of data for each lay back again, is to restore the data from the trash of the system or a backup on another disk. This is not about data recovery in the true sense. If these two methods, and is the disk intact, one can resort to undelete programs. These are sometimes even free. These programs provide, unfortunately, very often no complete recovery. Is it directly after the data loss chances rather higher, as the probability that the space occupied by the file originally was overwritten is rather low. If it is very important to data should be left to a data recovery specialist. With in-house tests can cause great damage and make a rescue impossible.
The professionals working in special clean rooms. The disks are then separated into its components. The data is then read out with special procedures and reconstructed. The success of such firms may well be proud. It lies between 80% and 90%.