Windows only: Put your high-priority programs and files in the most easily-accessed parts of your hard drive with UltimateDefrag, a free Windows utility. The program does all the normal data-ordering of a standard defragmenting app (and probably runs at roughly the same speeds), but lets you choose which data to place on the outer, or faster, portions of your disk. You can also ask UltimateDefrag to analyse your drive and see which files have been most recently accessed, which works best for drives or partitions set aside for data, or automatically try to improve ease of access. UltimateDefrag can also run as your default defrag tool, and run only when a screensaver is active. UltimateDefrag is a free download for Windows systems only.