Defragmentation

[powerbook911]

I want to defragment my hard drive because it's two years old, and I create and delete VERY large files every day.

What is an application that can effectively do this with minimum risk?

Thanks.

 

[disconap]

I like Drive Genius:

http://www.prosofteng.com/products/drive_genius.php

It's good for a bunch of stuff (most notably repartitioning an already initialized drive). It's the best defragger I've used for Leopard.