C drive defragmentation?

Now that I know what it is I'm not sure why mine won't. My C drive is set for defrag every Sunday aat 1:30 am. The problem is it never does. It will go for hours with that paper transfering folders symbol and always stay at 0% complete. Why is this?

C drive defragmentation?
A couple things about defrag.


#1 you need 20-25% free space for the machine to do the defrag. If you don't have the free space, defrag will do more harm than good.





#2 you need to run checkdisk before you do defrag. You should be able to look up check disk in windows help and learn how to do it, if you need help just click on my picture and email me. Be sure to remind me who you are and what you're trying to do as I get lots of email...
Reply:The speed of defrag varies widely. Usually it should be done within a couple of hours. But may take longer for high capacity drives. Before you defrag ensure that there are absolutely *NO* processes running in the background. Including Antivirus %26amp; Firewall software. The defrag process will *STOP* if any software interrupts the defrag program by trying to change the contents of the disk.





Better still, boot your computer in safe mode (Hit F8 continuously while your PC boots and select "Safe Mode" from the boot menu that appears) and defrag now. The safe mode ensures that most background programs are not run in the first place. Hence the defrag can go on without hassles.





If the speed is pathetic still, Try using some third party tool and see if that helps. Eg: Perferct Disk, Mst Defrag (www.mstsoftware.com), Norton's Speed Disk etc. Most of these are commerical software but a sharware version may be available.
Reply:Most of the time defrag wont go, is other items refresing or running in the background..so if it wont defrag normally , start your PC in safemode..F8 when booting...then go into defrag..it should complete it then with no problems.