1. Joined : Jul 2015
    Posts : 55
    Win10 (build 10586.589), Win10 (10240)
       12 Sep 2016 #1

    Windows.old is huge - what can I delete?


    I was doing some disk maintenance checks on my computer and noticed that "Windows.old", the previous OS version prior to upgrading to Windows 10, is a whopping 23Gb in size. It was a bit larger, but I've reduced it a little by removing:
    * SoftwareDistribution
    * ManifestCache

    Are there any other large files I can delete from Windows.old that are non-essential, not required in order to restore the older operating system?
      My System SpecsSystem Spec


  2. Joined : Jun 2016
    Posts : 1,386
    Win10 1607
       12 Sep 2016 #2

    It is just there incase you want to Rollback or find Files that are corrupt so you can get a copy if needed , it usually deletes on its own after 30 days , though I think with AU that is now 10 or 15 days.

    If you have a Windows~BT or such folder on C:\ that is the Download folder from a recent Upgrade it can also be deleted , it is sometime left behind if an Install fails.


    KB
    Last edited by Kbird; 13 Sep 2016 at 04:25.
      My System SpecsSystem Spec


  3. Joined : Jun 2015
    Posts : 138
    windows 10
       13 Sep 2016 #3

    After a Windows Upgrade, by default, a scheduled task is created and will run after four weeks to delete the Windows.Old directory. But if you wish, you can also remove the Windows.old folder manually earlier.
      My System SpecsSystem Spec


  4. Joined : Jun 2015
    UK
    Posts : 1,324
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)
       13 Sep 2016 #4

    Run Disk Cleanup, select Cleanup system files and check remove old Windows installations if you want to remove windows.old now.
      My System SpecsSystem Spec


  5. Joined : Aug 2016
    S/E England
    Posts : 1,150
    10 Home x64 (1607), Pro x86 (1511 & 1607)
       13 Sep 2016 #5

    Whatphoeb said: View Post
    After a Windows Upgrade, by default, a scheduled task is created and will run after four weeks to delete the Windows.Old directory. But if you wish, you can also remove the Windows.old folder manually earlier.
    I recall that MS promised to do so for my 12040 upgrade. They lied - it never got deleted. I had to do it myself with Disk Clean-up (clean up system files).

    I watched out for the AU in case it failed too, but it promptly removed it 10 days (to the minute) after my upgrade. (MS reduced it from 30 days to 10 for the AU.)
      My System SpecsSystem Spec


  6. Joined : May 2016
    Massachusetts
    Posts : 104
    Windows 10 Pro 32-bit
       13 Sep 2016 #6

    I wouldn't go around trying to figure out what to delete in Windows.old as we don't know what is on your computer.
    It sounds to me like the 30 day period for windows.old and $Windows.~BT to be automatically removed hasn't been reached yet. On one of my computers it took 35 days for whatever reason, on my other one it took only 31 days. After that I ran disk cleanup to ensure complete cleanup that includes minimizing WinSxs if applicable.
    But you could consider what's worth saving in Windows.old if it's possible to do so before it's removed.
      My System SpecsSystem Spec


  7. Joined : Jan 2014
    Oak Ridge TN, USA
    Posts : 23,939
    Windows 10 Pro x64
       13 Sep 2016 #7

    Just as an FYI.. here's a very nice tutorial on how to deal with the windows old folder.
    Windows.old Folder - Delete in Windows 10 - Windows 10 Forums
      My System SpecsSystem Spec


  8. Joined : Jul 2015
    Posts : 55
    Win10 (build 10586.589), Win10 (10240)
       18 Sep 2016 #8

    BunnyJ said: View Post
    Just as an FYI.. here's a very nice tutorial on how to deal with the windows old folder.
    Windows.old Folder - Delete in Windows 10 - Windows 10 Forums
    Thanks! Yes, I am relieved to see that it's all temporary... and that Windows should eventually dispense with it. In any case, a proper backup of a good running state suffices for me. I really don't want to go back to Windows 8... even though it was fine in many respects (except for that annoying full screen tile-view).
      My System SpecsSystem Spec


  9. Joined : Oct 2014
    Arnold, MD
    Posts : 17,468
    Triple Boot 10 Pro & 10 Insider Pro & 8.1 Pro
       18 Sep 2016 #9

    cytherian said: View Post
    Thanks! Yes, I am relieved to see that it's all temporary... and that Windows should eventually dispense with it. In any case, a proper backup of a good running state suffices for me. I really don't want to go back to Windows 8... even though it was fine in many respects (except for that annoying full screen tile-view).
    @cytherian In addition to the tutorial that BunnyJ posted for you, which was written by one of our Administrators here on Tenforums, there are hundreds of good tutorials available. Simply go here Windows 10 Tutorial Index - Windows 10 Forums or click on Tutorial Index in the menu bar at the top of the page, or type a few keywords in the search box at the top of the page. Just thought it may help in the future. TC
      My System SpecsSystem Spec


  10. Joined : Jul 2015
    Posts : 55
    Win10 (build 10586.589), Win10 (10240)
       19 Sep 2016 #10

    f14tomcat said: View Post
    @cytherian In addition to the tutorial that BunnyJ posted for you, which was written by one of our Administrators here on Tenforums, there are hundreds of good tutorials available. Simply go here Windows 10 Tutorial Index - Windows 10 Forums or click on Tutorial Index in the menu bar at the top of the page, or type a few keywords in the search box at the top of the page. Just thought it may help in the future. TC
    Thanks, TC. Wow... that tutorial index is HUGE. Brink and others must have spent hundreds of days compiling all that info. This makes anything Microsoft provides online pale in comparison. Btw, given you're multi-booting with 10 and 8, what qualities do you feel 8 has that is missing in 10? If anything?
      My System SpecsSystem Spec


 


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