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#270
I haven't had problems removing windows.old recently as it's been deleted via Disk Cleanup as it should be. But past problems when Disk Cleanup wouldn't delete it haven't been as easily solved. Efforts to delete from within Windows get a report that windows.old doesn't exist. And most of it doesn't. There will just be a file or 2 buried somewhere deep in subfolders, apparently corrupted and keeping windows.old from going away totally. Your command gets rid of it for me in these cases, but only by running Command Prompt outside Windows.