I have forgot my name and password on my MacBook pro how do i open it?

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.

If you are unable to get either of the above to work:

(these will only work on Leopard or earlier)

1. Boot to Safe Mode by restarting and after the chime press and hold down

the COMMAND-S keys until a black screen with white type appears.

2. At the prompt, type the following commands pressing return after each

command line:

/sbin/fsck -yf

If you do not receive a "Filesystem OK" message then repeat this command

until you do. If after seven tries you still do not receive a "Filesystem OK"

message, then the system is corrupted and needs to be reinstalled.

mount -uw /

cd /private/var/db/netinfo

mv local.nidb local.old

rm ../.AppleSetupDone

shutdown -r now

The second-to-last command above will cause OS X to think that the operating system is newly installed, and when the new owner starts up the computer it will send him/her to the startup wizard where he/she can start a new user without reinstalling.

This last method does not actually change a password. It simply removes the user accounts and lets you create an initial admin account as if the computer were new out of the box.

How to reset the OS X password without a startup CD:

Reboot into Single-user Mode. Enter the following and press RETURN after each command line

1. Type fsck -fy

2. Type mount -uw /

3. Type passwd <username>

I have never tried this method myself.

You don't. That's the whole point of a password.

You reset it:

http://support.apple.com/kb/HT1274

Boot to your Recovery partition by holding down the Command and R keys whilst booting.

Once in the Recovery screen, select Terminal from the Utilities menu. In Terminal, type...

resetpassword

...a small app will open allowing you to select the user for whom you want to enter a new password. Selecta user and enter a new password - twice - and give yourself a good hint.

Select OK (or Done or whatever) and reboot your machine using the user and password that you changed.

Good luck,

Clinton