After reinstalling the win7 system, how to delete the Windows.old folder to release the C disk space

How to delete the Windows.old file after reinstalling the win7 system:

1. Enter the resource manager, at C drive (the system disk of the Windows.old folder generated after reinstalling the system) right click on the attribute;

2. Open the properties dialog of the C drive, as shown in the figure, click on Disk Cleanup;

3, waiting to analyze the junk files and folders in the newly installed system;

4, did not find large files, generally above 10G, this time you can click to clean up the system files;

5, continue to scan analysis, will search for the previous Windows installation, check, and then click OK;

6, will pop up a confirmation window, click delete file;

7, at this time Will clean the C drive, including the Windows.old folder generated after reinstalling the system;

8, clean up the old system, after cleaning, go to see the system disk file, this reinstall system after the generation The Windows.old folder will no longer exist.

Additional note: The Windows.old folder generated after reinstalling the system has no effect and effect on the new system, and it also takes up space, so it can be deleted.