how to DEGENERATE Hdd

I tried google for a few hours, but it seems that all internet is about bad sector recovery, i'm out of ideas.
I mean - how HDD software decides and what it should send into controller board to force sector to turn electronicaly bad when a defect is found.

>>7
I actually know what a harddrive is. But, the gig is up, your ridiculously awkward grammar was too inconsistant with that last post. And because "mark sectors as "Bad" without them beeing defective in the first place" - noone would ever want to do that.