Win10 SYSTEM does not have permission to cause Windows.old can not delete the solution

Everyone should be aware that the C drive is a special software for the Win10 system. Windows software is also constantly updated. When updating, the C drive will leave a backup of Windous.old. When the user deletes the old version, it indicates that the permissions are insufficient to require the SYSTEM permission to operate. What is the matter, how to deal with it? In fact, we do not need to delete this. In the Win10 system, the same disk cleaning tool is used. The cleaning tool can successfully remove some old files. The operation method is as follows.

1, open “ my computer & rdquo; (this computer) into the hard drive, find the C drive
2, right click on the mouse "C drive" & rdquo; & mdash; & mdash; in the pop-up In the menu, select “Properties”
3, select “Disk Cleanup>, then scan, wait a few minutes patiently
4, scan complete, select “clean system file”, same Will perform a system scan, and then wait patiently for a few minutes
5, after the scan is completed, in the pop-up window, find "Previous windows installation", put this item in front of √, then make sure to clean up.
6, this step may wait longer, depending on the size of the backup file, the time will be different, wait patiently. After the prompt is completed, enter the C drive, you will find that the WINDOWS.OLD file is gone, or become 0KB.
This cleans up your C drive and cleans up Windows.oldd. Save space for your C drive. You can also clean your C drive regularly so that your computer won't run slower and slower.