Actually we know the new hard drives from the manufacturers are not always as perfect as expected generally. As the discs of hard drives are quite precise, a higher requirement is asked on the production environment and mobility. Even if there is a speck of dust or a very slight collision, bad sectors from several to hundreds can be generated. Thus, according to the general hard drive capacity (120GB), it is likely for new hard drives to have thousands of bad sectors. Here, a hard drive repair method used by manufacturers is introduced.
Hard drive manufacturers use special equipments to scan hard drives totally and record the bad and unstably-magnetic sectors, and then make these hard drives into a hard drive defects list and write into the system reservation and then close up these sectors through a control program, while the control program of hard drives can’t these areas in reading discs. This is a very general hard drive repair method used by PC hardware manufacturers.
Today, as hard drive is complex in function and parameter, the information written into the system reserved areas is various. In this way, the bottom control closes off all the sectors with problems, so users can’t see this information whatever formats and partition software are used as these hard drives were never bad. At the same time, hard drive has another enclosed area, which is also known as reserving capacity, and they are totally good hard drive discs without problems but are closed off for some reasons. Thus, this hard drive repair method can be the best in a sense. For example, a hard drive on a wireless security has a capacity of 60GB, while the capacity of a single-hard-disc is 40GB, and then the discs of hard drives composed of two diskettes are necessary to close of the capacity of 20GB, because the production line of the diskettes is constant and the hard drive manufacturers only product a kind of diskette to reduce the production cost. Thus, this hard drive repair method used by manufacturers has a very good effect.