Defragging a disk is all good but one thing you have to remember that the reason you are doing it is because well, the disk is fragmented. Meaning that one file is all over. Whether or not your driv fragments itself is determined on the partition type you are usng and also on the operatng system. Because unlike windows Partition options a linux parttion will not fragment. The reason they fragment is so that it wll copy/save/write faster. And yes Defragmenting wll speed up your computer but not your hard drive. Your hard drive speed is based on the amount of buffer speed you have and the rate of rpm's.
