What is bad sector?
A
disk has two sides (a top and a bottom). Each side of the disk has
tracks or concentric rings on the surface. Each ring is divided like a
pie into equal wedges, or sectors, which are the smallest units of
storage space on the disk. If one of these units is damaged or flawed,
it is considered a bad sector and cannot be used.
If
there was already data in that sector when it got damaged, chances are
slim that you can recover that data unless you have the specialized
hardware and software necessary for that sort of operation. Almost all
hard disks are born with bad sectors, so don't freak out if your
software utility reports them. Other bad sectors should not start
appearing, though, after you start using the disk.
Chapter : Introduction to Computer
- Computer Fundamental
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