Crack Mac OS X Administrator password - create new admin account

Here is how you can create yourself an admin account without knowing the actual administrator password on Mac OS X.

You will need to restart your computer in something we call «single user mode» wich give you a root access to your computer (command line only). You can to that by holding CMD+S keys while rebooting. The screen should turn black and geek stuff appear on the screen. When it's finish loading, enter these command :

/sbin/mount -uw /
rm /var/db/.applesetupdone
reboot

than you'll get the wizard that you've seen when you boot the first time after Mac OS X installation. Follow all the steps including creation of an Administrator account.
basically this crack remove the file that tells Mac OS X you've already done the installation and let you create a new administrator account.