XXXX XXXX: what is C disc defragmentation and why is it needed?
Silver_metal: this is a box of paper.
Silver_metal: here you got the paper out of the box, read it, and then there is little space, so you broke it into a couple of fragments, moved where it came in and remembered the place of these fragments, and so on each time (this is how you are strange); in the end, in order to read this paper the next time, you have to gather and put together all these fragments.
Silver_metal: Time is lost because of this if the file (i.e. paper) is heavily fragmented: the beginning on one cluster, the end on the other
Silver_metal: and suddenly came a good bearded uncle with glue!
Silver_metal: rolled out part of the paper on the floor, glued and laid. and then again got some papers, glued and laid, and so all the papers, as a result, you worked faster :)
Silver_metal: good uncle Defragmentation