How to delete Windows.old in Windows 10

Do you wonder, how to delete the copy of your old system C:\Windows.old? But be aware of loosing data. Deleting this folder prevents you from roll back to a previous version of Windows. And you must be an administrator, otherwise you wont be able to delete it.

Just type in Windows search Cleanup Disk (in Czech Vyčištění disku)

vycisteni_disku

Select the app Disk Cleanup

Select Cleanup System Files – be patient it might took some time.

cl_syst

Now you should see Previous Windows Installation(s) item in checkbox menu.

cl_ins

If you are really sure, select OK and its done.

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