I bought an Apple laptop secondhand from my friend, a G4 powerbook. In the startup Macintosh HD disk, there is a list of symbols or categories (documents, music, movies, etc.) One is called "user". You can create new users with a whole new set of files, not appearing on the other users' areas.
I want to make myself the new primary user, but no matter how many times I delete the old primary user or change the name, whenever I reboot his name always appears again unchanged, with the little house symbol next to it, denoting primary user.
How can I change this?