I used my fathers iMac and signed in as guest user but he died and I don't have his information to get in as administrator so I can download or delete things from the computer. I went to geek squid and after paying $39.99 to get help but still can't change to be administrator.
iMac 21.5″, macOS 10.14
The most simple method is to restart the computer in the Recovery Partition (hold down Command + R on startup), then open Terminal and type resetpassword and follow the on-screen prompts.
The most simple method is to restart the computer in the Recovery Partition (hold down Command + R on startup), then open Terminal and type resetpassword and follow the on-screen prompts.
how can I change administrator password
