I need to defragment my Gateway running Windows 98, because the performance has become horrible. When I run the defragmenter, it says "Checking drive for errors" and doesn't move one from that point (I let it go for 10 hours and it still said that). I tried to run the Scandisk first but it just gives me a message saying something like "Scandisk has restarted ten times because another program is trying to write to the drive." However, no other programs were open. Any idea how I can defragment?