1. dpomerance's Avatar
    After doing the major update I now have a 12G windows.old folder. Can I just blow it away after being sure everything is working okay or will it go away by itself?
    11-18-2015 07:12 AM
  2. Amit Mishra3's Avatar
    You can blow it away... That's your old windows which you should've formatted while installing update. N it will not go away by itself.
    11-18-2015 07:14 AM
  3. rafal soboczynski's Avatar
    After doing the major update I now have a 12G windows.old folder. Can I just blow it away after being sure everything is working okay or will it go away by itself?
    Had the Same problem after Nov update, but my folder took 20+ gb. I've used disk cleanup tool to get rid of it
    11-18-2015 07:18 AM
  4. sulistyarso's Avatar
    After a month it will deleted automatically
    Dave47 and xandros9 like this.
    11-18-2015 07:40 AM
  5. orlbuckeye's Avatar
    It uses that file to go back to the upgraded OS. (windows 7 or 8.1)
    11-18-2015 07:51 AM
  6. TechFreak1's Avatar
    This folder is for the old windows install as mentioned previously and can be removed using the disk clean up utility. However I would suggest not removing it unless you really know what your doing and don't mind not be able to roll back with in 30 days.
    11-18-2015 07:51 AM
  7. Dave47's Avatar
    You can blow it away... That's your old windows which you should've formatted while installing update. N it will not go away by itself.
    As others have said Windows.old will automatically go bye-bye after 30 days. And a citation from our friends in Redmond.
    ******************************************************************
    Delete your previous version of Windows

    One month after you upgrade to Windows 10, your previous version of Windows will be automatically deleted from your PC. However, if you need to free up disk space, and you’re confident that your files and settings are where you want them to be in Windows 10, you can safely delete it yourself. Keep in mind that you'll be deleting your Windows.old folder, which contains files that give you the option to go back to your previous version of Windows. Deleting your previous version of Windows can’t be undone.
    1.Go to Start, enter Settings in the search box, and then select Settings.
    2.Select System > Storage > This PC and then scroll down the list and select Temporary files.
    3.Under Previous version of Windows, select Delete previous versions and then select Delete.
    badcat and xandros9 like this.
    11-18-2015 08:40 AM
  8. Omnitographer's Avatar
    Everyone saying this is from the old (vista/7/8/8.1) Windows install is wrong, you're missing where the op said it appeared after the update. I also got one of these after the november update and my install was a fresh 10 to a brand new ssd. Threshold 2 was like the 8 to 8.1 transition, and generated a .old folder, but this folder will not contain vista/7/8/8.1. Removing this folder will prevent you from rolling back to the original flavor of 10.
    badcat likes this.
    11-22-2015 06:20 PM
  9. TheCudder's Avatar
    Everyone saying this is from the old (vista/7/8/8.1) Windows install is wrong, you're missing where the op said it appeared after the update. I also got one of these after the november update and my install was a fresh 10 to a brand new ssd. Threshold 2 was like the 8 to 8.1 transition, and generated a .old folder, but this folder will not contain vista/7/8/8.1. Removing this folder will prevent you from rolling back to the original flavor of 10.
    This. This is also why people who have upgraded from Windows 7 / 8x in the last 30 days won't see the November update, as it will replace the existing Windows.old (for restoring to Windows 7/8.x) with a newer Windows.old (for restoring to Windows 10 TH1 / 10240 RTM).
    badcat likes this.
    11-22-2015 10:06 PM

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