OurStanley is quite right. 3% 'system restore' allows for enough restore points. I've never understood why anyone would need the default of 12% anyway.
You will notice a dramatic increase in 'free space' on the disc when you have done it. Mine increased from 13.0GB to 17.0GB when I did it some weeks ago .
-------------------- ...."Aren't you just fed-up with it"?...........radiogandy...