forgot Macbook desktop password

Forgot Your Account Password

For Snow Leopard and earlier

Mac OS X 10.6- If you forget your administrator password

For Lion/Mountain Lion

Boot to the Recovery HD:

Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.

When the menubar appears select Terminal from the Utilities menu.

Enter resetpassword at the prompt and press RETURN. Follow

instructions in the dialog window that will appear.

Or see Reset a Mac OS X 10.7 Lion Password and

OS X Lion- Apple ID can be used to reset your user account password.

You can reset the password as follows:

To start, reboot in safe mode. At the prompt enter the following:

/sbin/fsck -fy

Press RETURN. If you receive this message: ** The volume (name_of_volume) appears to be OK then continue to the next command. If you receive this message: ***** FILE SYSTEM WAS MODIFIED ***** then repeat the above command until you receive the OK message. If you repeat the command seven times without receiving the OK message then you cannot repair the drive and should not continue.

/sbin/mount -uw /

Then, type in pressing RETURN after each:

/usr/libexec/register_mach_bootstrap_servers /etc/mach_init.d

cd /var/db/netinfo

netinfod -s local

SystemStarter

passwd root

You’ll be asked to come up with a new password. If you want to change a login’s password, substitute ‘root’ with the username. After that, enter

reboot