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no, no, no permissions don't mean dick when his father has administrative access, sure, it's an annoyance, but he can just change them himself, because when the OS is booted from his hard drive, he...

<edit> sorry about the erroneous post, i misunderstood the question. To answer your question, No, i don't think there is a way to keep him from booting from his drive with yours as a slave and...