Windows Update Boot Speed


  1. Posts : 14,586
    Windows 10 Professional x64
       #1

    Windows Update Boot Speed


    I have noticed that say after a Windows cumulative update Windows at first is a bit slower to load but after say 5 or 6 shutdowns/startups boot time is back up to speed ... anyone know why this is ? :)
      My Computer


  2. Posts : 19,516
    W11+W11 Developer Insider + Linux
       #2

    Stephanie said:
    I have noticed that say after a Windows cumulative update Windows at first is a bit slower to load but after say 5 or 6 shutdowns/startups boot time is back up to speed ... anyone know why this is ? :)
    After any larger update requiring restart it takes some time for everything be set in right places, the right way. Best to leave computer on and on idle an hour or two, depending on it's and HDD speeds. I think that they are letting maintenance do it's thing so updates go faster.
      My Computers


  3. Posts : 896
    windows 10
       #3

    If you have HDD, this can be due to the Prefetcher being defragmenting and reordering files needed during the boot. The prefetcher need 6 restarts to complete this operation, so that the boot time can be optimized by predicting and caching necessary files for the boot process.
      My Computer


  4. Posts : 14,586
    Windows 10 Professional x64
    Thread Starter
       #4

    CountMike said:
    After any larger update requiring restart it takes some time for everything be set in right places, the right way. Best to leave computer on and on idle an hour or two, depending on it's and HDD speeds. I think that they are letting maintenance do it's thing so updates go faster.
    I see thank you Mike :)

    zinou said:
    If you have HDD, this can be due to the Prefetcher being defragmenting and reordering files needed during the boot. The prefetcher need 6 restarts to complete this operation, so that the boot time can be optimized by predicting and caching necessary files for the boot process.
    Thank you for your help zinou :)
      My Computer


  5. Posts : 6,789
    22H2 64 Bit Pro
       #5

    Just to add that even 24 hours after installing updates and several reboots later I still see files being modified in the background. It can go on for days.

    Example from just now:

    Windows Update Boot Speed-spy-spy-warning.jpg
    List of some of the changes: Update.txt
      My Computer


 

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