The bootstrap is a program contained on the Rom that is automatically executed when the processor turns on. The Bootstrap Program scans the hard drive and starts the process of initializing the operating system. The version depends completely on the hardware you are using. An IBM chipset from 1988 will have a different Bootstrap program than an intel chipset from 2015.
to be honest me neither dude
Well, an endoskeleton is an internal skeleton, like humans have.
Pro: Bones do not get broke as easily, since they are inside of the body. Bones that break also heal more quickly in an endoskeleton, since they have tissue and blood surrounding it and transferring nutrients.
Con: The flesh can get easily damaged. There is no shedding with endoskeletons, so a new skeleton cannot be grown in the event of an injury.