Originally Posted by CivicSiRacer
Material doesn't get "transferred onto the rotor" you are trying to get the rust-proof coating off the rotors and groove the pads to the rotors or if you will groove the rotor to the pads. Sort of like mashing peanut butter and jelly together on bread.
Sorry, but this is somewhat incorrect, sure breaking in pads and rotors is foing what you are talking about, however, having talked at length with the Owners of Carbotech (Larry) and Cobalt Friction (Andi Lin) about this, for brake pads to work correctly you must get a light film of the brake material on the rotor or it will not stop correctly or consistantly. Weather or not a pad comes with "break in Procedures" it is a good Idea to do a few hard stops after putting new pads on for this reason, so that they work good the first time you use them.
Brake in procedures are differnt for differnt pads, a lot of track pads requie you to get them very hot so they outgass, which modern pads only do once to get rid of some of the bonding materials and such, and something you would not what to happen going into turn 1 at high speed.