Renaming Windows.old to windows -

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in laptop's old hdd. there windows.old , windows folders.windows.old belongs win7, windows belongs win10. however, win10 not start. connnected hdd externally pc. happens if delete windows folder , rename windows.old windows. old operating system(win7) work ?

it not. however, can use cmd iso rename user folder , clean install.

cd /d c:\ move c:\users c:\u /y move c:\programdata c:\d /y rd c:\windows /s /q rd c:\program files /s /q  rd c:\program files (x86) /s /q

note: not format


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