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  1.    17 Feb 2015 #10
    Join Date : Oct 2013
    Posts : 24,385
    64-bit Windows 10 Pro build 17017
    Thread Starter

    Just note that checking the System Compression box isn't for deleting files, but to only compress them to save the amount of space displayed for it in Disk Cleanup.
      My ComputersSystem Spec
  2.    17 Feb 2015 #11
    Join Date : Jan 2014
    Get Off My Lawn
    Posts : 4,109
    Win10 Pro

    Quote Originally Posted by Brink View Post
    Just note that checking the System Compression box isn't for deleting files, but to only compress them to save the amount of space displayed for it in Disk Cleanup.
    Thanks for the info.
    Dang it, I will leave it alone then.
      My ComputersSystem Spec
  3.    17 Feb 2015 #12
    Join Date : Feb 2014
    Posts : 9,136
    Windows 10 Professional

    MS tech's don't know much more than we do.
    I was of the understanding it compresses non essential system files but I could be mistaken.

    Click image for larger version. 

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      My ComputersSystem Spec
  4.    17 Feb 2015 #13
    Join Date : Jan 2014
    Get Off My Lawn
    Posts : 4,109
    Win10 Pro

    Thanks Edwin.
    We will have to wait to see what happens to this in future builds then.
    Last edited by COMPUTIAC; 17 Feb 2015 at 23:29.
      My ComputersSystem Spec
  5.    23 Mar 2015 #14
    Join Date : Nov 2013
    Posts : 804
    10 Pro Preview x64

    The compression works extremely well - 85% for windows and 90% for program files - my windows 10 install (including 51 programs) is (just) under 3GB if you exclude page file and user data etc which is smaller than the ISO I installed it from - see here Microsoft promises less disk space Win10 - Windows 10 Forums
      My ComputerSystem Spec
  6.    19 Aug 2015 #15
    Join Date : Oct 2013
    Posts : 24,385
    64-bit Windows 10 Pro build 17017
    Thread Starter

    Tutorial updated to add OPTION TWO for extended Disk Cleanup.
      My ComputersSystem Spec
  7.    10 Sep 2015 #16
    Join Date : Jan 2014
    Posts : 1,385
    Windows 10 Pro (32-bit) Insider 16291

    Is the system compression option the same as using the command-line function+option:
    "compact /compactos"?

    So for instance this queries the current state:
    Code:
    compact /compactos:query
    And these commands change the state to be on or off.
    Code:
    compact /compactos:always
    compact /compactos:never
    I seem to remember that compactos is only recommended for solid state drives, and indeed the System Compression option doesn't appear in Disk Cleanup on my old laptop with spinning disk.
      My ComputerSystem Spec
  8.    10 Sep 2015 #17
    Join Date : Oct 2013
    Posts : 24,385
    64-bit Windows 10 Pro build 17017
    Thread Starter

    Hello David,

    I believe so, but I have never used it since it would never be good for performance.

    https://www.tenforums.com/tutorials/2...dows-10-a.html
    Last edited by Brink; 10 Sep 2015 at 16:33. Reason: update
      My ComputersSystem Spec
  9.    12 Sep 2015 #18
    Join Date : Sep 2015
    Posts : 6
    Windows 10

    Thank you!
      My ComputerSystem Spec
  10.    12 Sep 2015 #19
    Join Date : Nov 2014
    Ohio
    Posts : 285
    Windows 10

    I might give it a try. I've been using CCleaner for quite sometime. Does anyone know how the two compare with each other?
      My ComputerSystem Spec

 
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