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How to partially defrag files?


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#1 skittleys

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Posted 27 February 2011 - 06:03 PM

It seems that with Acronis or the built-in defragger (Windows XP), if the program can not find a space to place an entire file contiguously, it makes absolutely no attempt to defragment the file even a little bit. For example, I have a file that is ~130MB and has almost 1500 fragments now (it's a OneNote "section" so new data is added frequently). When using these defraggers, it can not find a full 130MB block of space, so it just leaves it. I've also used the "optimize" function, but that doesn't free up a big enough block of space, even though I have ~20% disk space free.

Are there any programs that will at least put some of these fragments together and reduce the total number of them?

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#2 Platypus

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Posted 27 February 2011 - 09:52 PM

The scenario seems somewhat unlikely to me and I'd suspect something is being reported incorrectly. However, why not move the file to another drive, defragment then copy the file back. It should be copied back to either contiguous space so end up entirely unfragmented, or with a small degree of fragmentation that will not matter in practice.

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#3 Allan

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Posted 28 February 2011 - 07:57 AM

Download and run the trial version of either PerfectDisk or Diskkeeper. What happens?




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