Okay. It's a PPC mac. System OSX4.11. He DID reformat and wipe and all that good stuff. Made the admin noname and can't remember what he made the password.
I have never started any Mac and seen a place where I could enter anything like the following:
1. mount -uw /
2. sh /etc/rc
3. ls...
I'm sorry, but I don't understand you at all. I bought a used mac laptop. The person I bought it from doesn't remember the password, so I can't install any new software or make myself the administrator. What can I do?