Where did this idea come from that a hard drive is like a gas can is wrong too. It's more like a propane tank. You cannot fill a hard drive to 100%. It cannot be done. It never could be done. I've used computers now for like 23 years, you still cannot fill a drive to 100%. It will crash around about 90% full. Why? cause there is this little command in windows and other platforms that says don't start writing in spaces that's smaller than say 4 meg. It keeps the drives from getting fragmented too fast. I have mine here set for 4 megs yours may be different. There has to be free space on a hard drive and in the case of using a paging file system there has to be lots of it for efficant computer use. Remember the paging file in your case is allowed to take up 3.25 gig so you need that free plus 10% of the drive that you'll never be able to write to anyway. If you got a big C drive like that you need 4 gigs free all the time. Make sence?