I was having problems with my 4 month old listed below harddisk....i had installed and uninstalled many games...i ran windows defragger and it showed 2 % C.....0% D and 3 % E........but today i downloaded piriform defraggler and it showed 14%, 2% and 53% fragmentation....which is right i don't know?????
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More about defrag
  1. Windows built-in defragmenter has been intentionally programmed to ignore certain types of file fragmentation where defragmenting those specific files will not improve performance to any discernible degree.

    Third-party defragmenters, however, analyse and report the total degree of fragmentation, regardless of which files will actually reap performance benefits if defragmented. That's the main reason why third-party defraggers are so popular even though Windows has it's own.

    However, it should be noted that defragging too often or when it's not necessary can be counter-productive as it will shorten the life of the hard drive. Generally speaking, if a drive is less than 5% fragmented, don't defrag.
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