Remove the old version of Windows.
Remove the old version of Windows.
The message suggests removing your current Windows installation, warning that you won’t be able to revert to it. It likely refers to deleting the existing version of Windows rather than clearing all files.
Only backup copies of the old system restore points and saved update files.
I used to build the system with Windows 10 and never moved past Windows 7 or any other version.
This ensures your game files remain intact even after deleting previous versions of Windows.
If you perform a disk cleanup, it won't affect personal files—only Windows updates and temporary files.