Some of you ask for change the user password in 10.7 or 10.8, because the button was deleted.
With Mac OS X Snow Leopard and older Mac OS, the installer disc allows you to change the user password pressing Utilities > Password Reset. In Lion, it was deleted, but you can change it with easy steps. There are two ways to reset the user password in OS X Lion and Mountain Lion:
If you boot in your system, you can change the password. It's used to change it if you didn't forget it.
- Boot your Mac and open System Preferences > Users and Groups
- You can see the users. Press the user what you want to change the password and select Change password. You will be asked for your password
When you forgot the password and you can't use OS X, you have to use the new Recovery.
- To boot in Recovery system, press Command and R keys in boot and hold the keys until you see the Apple icon. If you have a Mac with Internet Recovery, read > http://support.apple.com/kb/HT4718. If your Mac has got a wireless keyboard, hold them when you hear the startup sound
- When it starts, select Utilities > Terminal, and type:
Press your user and type your password. Finally, reboot.
This doesn't work for FileVault. If you forget your password with FileVault, you lost your info. Also, you can see if you use Recovery HD or Internet Recovery, or enable it -> http://support.apple.com/kb/HT4904
You can do it with an USB drive > http://support.apple.com/kb/HT4848