What is disk defragmentation and how does it work

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  • When should you defrag
  • Does defragmentation improve performance...

    We still get quite a few questions about when and how to optimize storage devices.

    How to defrag windows 10

  • How to defrag windows 10
  • How long does defragmentation take
  • Does defragmentation improve performance
  • How to defrag a laptop
  • What does defragging do
  • Easy answer: The care and feeding of storage devices is either taken care of automatically by Windows, or it’s simply unnecessary. Mostly.

    [Have a tech question? Send your query to answer@pcworld.com.]

    Defragging

    Defragging hard drives (not SSDs) has been of limited benefit since Microsoft switched to the NTFS file system.

    Why? Because to a large extent, NTFS is self-optimizing.

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    Add Windows’ various tricks such as pre-fetch, better ordering of files, and hard-wiring important files to set locations, and there’s rarely any noticeable degradation in hard drive performance even after years of use.

    That said, many external drives come formatted to FAT16, FAT32, or exFAT.

    These might benefit from optimization after a lengthy period of heavy use. Whether the time you save during normal use after the fact adds up to the time you spend optimizing the hard drive, or the additional wear and tear on the drive are worth it, are debatable.

    Back in the days of FAT, DOS, and slow 80MB

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