A bad sector is a term used to refer to a P. C. problem where data can't be written onto an area of the hard drive, cannot be accessed by the operating system or merely can't be used due to persistent damage. A sector is a segment or subdivision of a track on a magnetic or optical disk.
Bad sectors are usually spotted by disk use software such CHKDSK, SCANDISK and badblock. When these bad sectors are noticed by use software, they're shut out from usage and the operating system 'skips ' on them.
Modern operating systems map out a hard drive and avoid bad sectors in order that they are not used even during reformatting. Similarly, modern hard drives come with extra sectors to make up for those sectors which might go bad. This is a sort of buffering allowance in case of manufacture defects in hard disk sectors. When formatting a drive, the spare sectors are tapped to replace the bad sectors.
Info on hard disk bad sectors run the danger of getting corrupted and permanently destroyed. The reasons behind hard disk bad sectors are manufacturing defects in software or mess ups in the read/write heads which render the info on the sectors illegible. This is a slightly mild case of bad sector which can often be solved by an easy act of overwriting on and thus completely erasing the disk information.
Mechanical faults can be a cause of bad sectors as this kind of problem quickly breeds further bad sectors. A head crash is one example where the read/write head come in contact with the surface of the platter and sets off ripples of damage across the disk. As discussed previously, spare sectors may replace the bad ones during formatting but if the bad sectors are yet propagating due to loose particles on the disk or some disk errors, the disk is still cursed to die shortly. It is critical that data be salvaged as quickly as possible before the disk ultimately expires, and that's where a data recovery professional can help.
Bad sectors are usually spotted by disk use software such CHKDSK, SCANDISK and badblock. When these bad sectors are noticed by use software, they're shut out from usage and the operating system 'skips ' on them.
Modern operating systems map out a hard drive and avoid bad sectors in order that they are not used even during reformatting. Similarly, modern hard drives come with extra sectors to make up for those sectors which might go bad. This is a sort of buffering allowance in case of manufacture defects in hard disk sectors. When formatting a drive, the spare sectors are tapped to replace the bad sectors.
Info on hard disk bad sectors run the danger of getting corrupted and permanently destroyed. The reasons behind hard disk bad sectors are manufacturing defects in software or mess ups in the read/write heads which render the info on the sectors illegible. This is a slightly mild case of bad sector which can often be solved by an easy act of overwriting on and thus completely erasing the disk information.
Mechanical faults can be a cause of bad sectors as this kind of problem quickly breeds further bad sectors. A head crash is one example where the read/write head come in contact with the surface of the platter and sets off ripples of damage across the disk. As discussed previously, spare sectors may replace the bad ones during formatting but if the bad sectors are yet propagating due to loose particles on the disk or some disk errors, the disk is still cursed to die shortly. It is critical that data be salvaged as quickly as possible before the disk ultimately expires, and that's where a data recovery professional can help.
About the Author:
Brian Shaw runs a data recovery business called Kingdom Data Recovery Edinburgh who service all of the United Kingdom. He's got many articles on his web site which refer to issues with storage devices and helpful info about stopping data loss.
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