数据恢复基础知识（Data recovery Basics）.doc

数据恢复基础知识（Data recovery Basics） Computer only data is the most critical, the loss of data is the biggest loss. Here I will explain some basic knowledge of data recovery. First stated, for important data, data backup is the basic method to prevent data loss, and data recovery depends on many factors, it is difficult to fully recover the data, usually only can recover data. Data recovery is retrieving lost data, such as deleting a file or folder completely, reformatting the disk, re partitioning the disk, and so on, all of which can result in data loss. More serious is the loss of data storage medium hardware damage, for example, accidentally broke the hard disk, hard disk, hard disk does not recognize there are a lot of bad sectors and so on. The most noteworthy point is that once you realize that the data lost, immediately stop the unnecessary operation, delete, error after, dont write data to disk! Dont power up after the disk has broken! Disk bad sectors can not read, do not read the disk and so on. Hard disk faults can be roughly divided into two major categories: hard and soft. Hard fault, that is, PCBA plate damage, disk scratches, chips and other raw parts burned, broken needle disconnection, head, voice coil motor damage, etc., is due to the hard disk of its own mechanical parts or electronic components damage caused. Severe vibration, frequent shutdown, short circuit, power supply voltage is not stable and easy to cause physical hard disk failure, hardware failure does not recognize the general performance of CMOS hard disk, there is a click click magnetic group crash or the motor does not turn head, not caused by read-write error phenomenon without any sound, the power, most of the situation described above, the general should be sent to special data recovery center detection and data recovery. Hard disk soft failure, that is, the hard disk data structure for some reason, for example, the virus causes the hard disk data structure disorder, and even can not b