How to delete the C drive windows.old folder

A lot of users upgraded Win8 found that the C drive is much larger than before the upgrade. It is not difficult to find the C drive. The newly installed system has a windows.old folder. This folder is the system before we upgraded. So how do we delete the previous Windows files of the C drive? Let's take a look at the steps: 1. Open the C drive and find a more windows.old folder. This folder is the Windows system file before the upgrade. After the upgrade, we can delete this file to slim down the C drive. The method is to right click on the C drive --> properties, select “ Disk Cleanup <; Click OK, a dialog box will appear to confirm the deletion, click on the delete file can be 3. In the pop-up "C: disk cleanup In the dialog box, select “Clean up system files”. 4. In the new pop-up “C: Disk Cleanup” dialog box, check “Before Windows Installation”. Click OK. A dialog box for confirming the deletion will pop up, and clicking delete the file will be fine