When I updated my windows laptop, long ago, from 8.1 to 10 I have since then always 2 operating systems 8.1 and 10 which means Windows 8.1 has its own folder on C drive named as Windows.old
.
Now I decided to delete the old windows, so according to many websites it is just about deleting the folder like any other folder with granting the permission to the current user which I tried. However, I couldn't ever delete it as it prompts always permission is needed
or access denied
even when trying to open explorer
with admin permission or even when trying to do the deletion using cmd
with admin permission too!
How could I delete the folder then, could you suggest some methods please?
NOTE: I tried also to log-in in safe mode
but didn't worked too.