crewmeal wrote:-
"Two questions!!
1. What is the difference with those defrag programmes mentioned above?
2. What's wrong with Microsoft defrag that comes with OS?"
Nowt wrong with MS defrag, as such.
Cannot speak for Vista, but XP defrag is a slimmed down version of "Diskeeper" by Diskeeper Corporation.
That program has a few more facilities, but it's main feature is that defrag is ongoing continuously during the times that you are not actually doing anything on your pc. As soon as you start to work it pauses until you stop.
The result is that your hard drive only ever gets "slightly" defragged.
I have my drive partitioned with the main drive - C (containing the OS and most programs) - being 30GB.
If I were to go now and do a manual defrag of C with Diskeeper it would take just a few seconds because so little defragging is needed due to the ongoing maintemance.