I have an MacBook Air with the OS Catalina installed. I need to change my admin account to a Standard User account.So how would you change a account from Administrator to a Standard account by using Recovery or Single User Mode, while not creating another admin account.
You don't need to use Recovery/Single User mode for this.
- If you don't have a new admin account yet, create one in System Preferences->Users & Groups
- Log out of the current account (the one you want to switch from admin to standard)
- Log in with another admin account
- Open System Preferences->Users & Groups, select the old account and untick "User can administer the computer"