I have a 40 gig hard drive split into 3 , a 4 gig , 11 gig and 25 , the 4 gig has the O/S on it which i`ve just updated to windows XP . After doing this the 4 gig is getting a bit full so i wish to resize the partition i`ve tried using partition magic but when it reboots to alter the sizes i`ve...