Diskus is a high-level hard drive diagnostic and
limited repair tool. It checks the disk geometry
by writing numbered IDs into the sectors of the
hard drive. Later one can verify that these
sector-IDs on the disk are still correct, thereby
detecting data which was not correctly written.
There is an option to "freshen" the data on your
harddrive, which will read and rewrite the
sectors. With modern drives this will re-map
defective sectors.
