How To : Reduce The Hard Disk Space Reserved For Restore Points
You can follow the steps mentioned below to achieve this:
1. In the Start menu, select Control Panel.
2. In the Control Panel, select System and Security, and then click System.
3. Next, click the Advanced system settings in the navigation panel on left-hand side.
4. In the System Properties dialog box, select the System Protection tab. Then select drive in Available Drives and click the Configure button.
In the System Protection dialog box, use the Max Usage slider to adjust the space used for restore points. You can check Current Usage value to see how much hard disk space is in use for restore points at the moment. I would not recommend making it too small, 5% to 10% of the hard disk space is best.
If you want to reduce the amount of disk space used for restore points, you can also use the Delete button to remove all current restore points. Keep in mind that you cannot restore the system to a previous configuration anymore. Alternately use the Disk Cleanup option to remove all but the last restore point.