How to add new admin on OS X without Boot DVD or without admin rights.
1. Shutdown
2. Hold apple key + s key down after you hear the chime.
    (command + s keys on newer Macs)
3. When you get text prompt enter in these terminal commands to create a brand new
    admin account (hitting return after each line):
    mount -uw /
    rm /var/db/.AppleSetupDone
    shutdown -h now
    Power ON
 - စက္ျပန္ဖြင့္တဲ႔ အခ်ိန္မွာ Mac Computer ကိုု စတင္ဝယ္တုန္းကအတိုင္း
    admin user name ထပ္ျပီး ထည့္လိုုက္ရင္ရပါျပီ
    internet connection ရိွဖိုု ့ေတာ့ လိုုပါတယ္။
    ျပီးရင္ အရင္ မလိုုခ်င္တဲ့ admin ကိုု delete လုုပ္လို႕ရပါျပီ