what do you call a regular braking system without power brakes feature? does it also have a vacuum booster?
It would NOT have a vacuum booster if it is not power brakes. I always called them manual brakes, but I don't know the correct term. Non-assisted, maybe?
The correct term for the old, non power braking system is just (hydraulic) service brake, as opposed to the (manual) parking brake. The term for the other system is power-assisted brakes, aka servo-assisted b, but this is almost not used as the non-power brakes are all but extinct. There's no power booster in the non-power brake system. The wide application of disk brakes almost invariably requires power assistance due to their intrinsic mechanical characteristics, ie requiring greater actuation force as compared with almost obsolete drum brakes used in the past.
