How to delete all restore points and shadow copies in Windows 7?

In Windows XP and Vista, it is possible to configure the disk clean-up tool to delete the restore point and shadow copies when debugging the system. However, Windows 7 does not offer these settings. In Windows 7, the deletion
process does not function similar to
previous versions. In case of used data,
the corresponding option in Windows
7 is very well concealed. To begin with, right-click on drive ‘C:’ in Windows Explorer and select the ‘Properties’ sub-command.
Under the ‘General’ tab, click on the ‘Disk clean-up’ option. While In older versions of Windows, you can switch to ‘Other options’, in Windows 7, first click on the ‘Disk cleanup’ button, and in the next dialog box, you will be able to switch to ‘Other options’.
Subsequently, under ‘System restore and shadow copies’, click on ‘Clean-up’. Simply confirm the security pop-up to delete all old system restore points by clicking on ‘Delete’ followed by clicking on ‘Delete files’.