I'm trying to clean up a pc for a friend and I've done all the usual like uninstalling unnecessary programs/running ccleaner/disk cleanup/disk defrag etc. However, there is a volume other than the C: drive and when I click then analyze/defragment disk button, the progress changes to pass 1 and shoots up to 15% and stops(i.e. stops defragging it altogether but keeps the defrag programme running). The partition itself is 17% fragmented and I wanted to be sure that it's not what's slowing the pc down.
I tried downloading defraggler and doing it with that but it doesnt work either. It says something about cancelling the operation and that the drive may be read only.