Defrag+Why

Defrag Why

If the file is in one single area of the hard drive, the head only needs to move once to read the file. If the file is contained in 3 different places, the head needs to move 3 times to get the same file, making the time it takes to load longer.
 * Speed:** Every time the hard drive needs to move the read head to a new location it takes a certain amount of time to move.

Limiting the amount of times it has to move is going to increase the drives lifespan. By defragmenting the hard drive all the files that can be lined up together are moved so that the hard drive reads files faster, has less movement needed, and lasts longer. Win/Win!
 * Wear-and-tear:** As a mechanical device, your hard drive read head moves a lot as it accesses files.