Root Password の入力

Enable root account in Snow Leopard

Accessing the root account is disabled by default in Snow Leopard. Luckily enabling it is pretty simple and takes less than 2 minutes.

Warning: Enabling the root account can leave your Mac vulnerable to security threats. Only enable it if you are aware of the risks and know what you are doing.

1. Open the Directory Utility located in /System/Library/CoreServices/.
2. Unlock the application by clicking the padlock icon and entering your Administrator login.
3. From the Edit menu, select Enable Root User.
4. Chose Change Root Password from the Edit menu and chose a password for the root user.

http://snowleopardtips.net/tips/enable-root-account-in-snow-leopard.html