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 Post subject: What does reallocated sectors mean?
PostPosted: December 11th, 2012, 17:32 
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Joined: March 8th, 2009, 15:41
Posts: 88
Location: Hiding Between the Platters
Using Crystal Disk Info on a Hitachi 320Gb there is a yellow warning mark
after "reallocated sectors" - there are about 100 in total what does this mean?


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 Post subject: Re: What does reallocated sectors mean?
PostPosted: December 11th, 2012, 17:58 
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Joined: August 18th, 2010, 17:35
Posts: 3636
Location: Massachusetts, USA
See S.M.A.R.T in Wikipedia

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 Post subject: Re: What does reallocated sectors mean?
PostPosted: December 12th, 2012, 6:40 
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Joined: July 7th, 2010, 4:45
Posts: 924
Location: UK
http://en.wikipedia.org/wiki/S.M.A.R.T.


"Count of reallocated sectors. When the hard drive finds a read/write/verification error, it marks that sector as "reallocated" and transfers data to a special reserved area (spare area). This process is also known as remapping, and reallocated sectors are called "remaps". The raw value normally represents a count of the bad sectors that have been found and remapped. Thus, the higher the attribute value, the more sectors the drive has had to reallocate. This allows a drive with bad sectors to continue operation; however, a drive which has had any reallocations at all is significantly more likely to fail in the near future.[2] While primarily used as a metric of the life expectancy of the drive, this number also affects performance. As the count of reallocated sectors increases, the read/write speed tends to become worse because the drive head is forced to seek to the reserved area whenever a remap is accessed. A workaround which will preserve drive speed at the expense of capacity is to create a disk partition over the region which contains remaps and instruct the operating system to not use that partition."


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