Thanks, yeah I'm familiar with the SMC but this is the first I've heard of it in the context of boot sectors. There wasn't much in the wikipedia link about tha

Thanks, yeah I'm familiar with the SMC but this is the first I've heard of it in the context of boot sectors. There wasn't much in the wikipedia link about that. Also the primary purpose of an SMC is not DRM, but battery, fans, power management etc.