The option description:
If you have decided to set independently hard disk parametres by means of this option you can specify quantity of sectors on one track of a hard disk. Already for a long time this parametre, along with all the others, answers not for physical structure of a disk, and for its logic representation. To learn correct value it is possible from the description applied on a hard disk or having addressed to a label on a disk — it individually for each model. Keep in mind, installation of erroneous quantity of sectors is capable to lead to loss or distortion хранимой on an information disk.
Other options identical to destination: