HT201240 i dont know my macbook air password, how do i retrieve it??

Question

i dont know my macbook air password, how do i retrieve it??
i dont remember setting a password, but now when i try to delete an app or do certain things it asks me for a password, where do i find this password??
and i wnt to disable this password. I have tried users & groups in the system preferences, but i am only able to reset the password, but i dont know what my password so how can i retrieve it?

Answer 1

OS X 10.7 Lion, 10.8 MountainLion & 10.9 Mavericks
Reset Password using Recovery HD
Boot into Recovery Partition.
Start the computer,then press and hold down command and R keys to start into recovery partition.
When you see the Apple logo, release the keys.
Wait until  OS X Utilities window shows up.
Move the mouse to the menubar at the top and click "Utilities", then select "Terminal"
from the drop down.
Terminal window will appear.
Type in   resetpassword   and press enter on the keyboard.
Leave the Terminal window open.
Reset Password Utility window will open with Macintosh HD selected.
Select the user account from the popup menu box.
Enter a new password.
Reenter the new password for the user.
Enter a hint.
Click the "Save" button.
Click  in the menubar and select Restart.