A friend of mine has a system that has an 8.5g HD and Win98 OS. Scan Disk has been performed (unsure whether it was a thorough) and when defrag is started, the percent completed never changes. Defrag has been started at bed time and he let it run all night and the next morning it still shows zero percent complete. During defrag it does show the little pieces stacking up but zero percent completed remains the same.Does anyone have an idea of what is wrong? The system is about 2 yrs old and has never been defrag'd.