Need to delete locked system files from old windows install


  1. Posts : 5
    Windows 7 Professional 64-bit
       #1

    Need to delete locked system files from old windows install


    Hello,

    I have recently updated my hdd with a clean windows 7 install, but had the old one on a secondary hard disk as a back up. I now need to delete these files to save space on my data drive, but am unable to delete the system and windows files as they are owned by TrustedInstaller.

    I discovered how to take ownership of these directories, but now the UAC is telling me that I need permission from myself to delete the files which I own!

    Is there anyway to get round this without shipping out my data and doing a format, which I don't want to do as I always seem to miss something important...

    Thanks
    Dave
      My Computer


  2. Posts : 26,863
    Windows 11 Pro
       #2

    See if this tutorial will help. how to delete windows.old You must be the administrator to do this.
      My Computer


 

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