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Sys. Preferences -> Accounts -> Select the User account you want to delete -> '-' (minus sign)
 
Log into osx with a user who has administrative privilages. then go into system prefs and ckick users. there (might be)/(will be) a closed lock in the bottom left corner. click it and put in the system password.

you should be good to go from here. just highlight the user and click minus.


[if i'm wrong, it's because i'm at a windows terminal at work now. i'm sure someone else will correct 🙂 ]
 
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