Many PC users may come across bad sectors on their computers and not know how to fix them. Fortunately, a bad sector is not a lost sector – there is a way to save them. Once the bad sector is marked, the disk controller will remap the logical sector to a different area on the hard drive.
Since the drive has many spare sectors, the only reason the operating system would detect a bad sector would be if the surface of the disk drive was failing.
If this happens, it means the drive has run out of spare sectors and can no longer remap bad ones. This is very bad news for your operating system.
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