Handy KB Article for Deleting Windows.old


If you’ve been dogfooding Windows 7 like I have, you have an orphaned windows.old directory on your hard drive and you need the space back from Windows.old to get the Windows 7 RTM.


When I Bing-ed for delete windows.old, I found KB Article 930527: How to use the Disk Cleanup feature to delete the Windows.old folder after you install Windows Vista.


 Paraphrasing (and tailoring to my situation Windows.old on the c: drive)



  1. Open a cmd window As Administrator

  2. takeown /F c:\windows.old\* /R /A

  3. cacls c:\windows.old\*.* /T /grant administrators:F (note had to delete, rmdir /q /s, my users directory by hand when cacls kept reporting “The system cannot find the path specified.” on various files inside that directory)

  4. rmdir /S /Q c:\windows.old\

And now I have 28 gigs back on my c: drive.


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