hi! here is my story. i have a couple of firewire hard drives with data that should not be erased. the fw drive is connected to my g4. but... once another mac (in this case an iBook) of a friend is connected to the fw drive, the iBook is authorized to alter the files (EVEN DELETE THEM). can someone please guide me how to keep my files safe, maybe show me a website that does or even a book where i can read up on file security especially in the mac platform. thank you.