Ummm... i knew that..
Soo... i was looking for one that doest actually do anything until a hotkey is pressed. if nothing is done then it just boots windows. Its like windows' built in F8 where u can run command prompt and safe mode and stuff. Ill use grub probably cuz there arent any hidden ones. The fist program im gonna write will be a hidden boot manager!! well.... the first boot manager ill write will be a hidden one...