In data storage, data recovery refers to the techniques used to recover files that have been lost or deleted from some storage medium.
There are two basic ways to lose information from a medium: physical data loss or logical loss of data. The physical loss of data, which is the most complicated, involves a real problem on the surface where the data is stored. For example, a rayon on a CD. In general, information that is physically altered is more difficult (if not impossible) to recover.
The logical loss of data is the elimination of files using the “delete file” option of any operating system (it can also go through a virus).
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There are several techniques used in data recovery. Sometimes, these techniques are used individually or with other techniques, depending on the type of damage to the hard drive and the amount of money that one is willing to spend to recover their data. Hardware replacement is probably the easiest and cheapest method of data recovery. Most data recovery specialists first check for hardware damage before moving on to more expensive and slower forms of data recovery. Disk images are frequently used when a hard drive has been physically damaged. This technique takes the data image out of the damaged partition of the hard drive and transfers it to a stable partition.
This technique is not always reliable; it can sometimes cause more damage to an operating system when rewriting sectors and is not able to recover all the data. One of the problems with these programs is that they will often permanently delete the damaged files automatically. The carving of data is done by data recovery specialists and it really consists of going through each section of a hard drive and searching for specific files. Data Recovery Hollywood software is available for different forms of data recovery in systems that remain somewhat operable or for operating systems that have failed completely.
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