How to adjust mechanical disc brakes on a bike for optimal performance?

To adjust mechanical disc brakes on a bike for optimal performance, follow these steps:

1. Loosen the brake caliper mounting bolts.
2. Squeeze the brake lever to center the caliper over the rotor.
3. Tighten the caliper mounting bolts.
4. Adjust the inner and outer brake pad positions for even contact with the rotor.
5. Check for any rubbing or squeaking noises while spinning the wheel.
6. Fine-tune the pad positions as needed for smooth and efficient braking.