Well, I needed to reset a password on a newly bought iMac (they'd forgotten what they had originally put??).
I knew how to do it back in 10.4 but thought the method might have changed a bit. Anyway, found this nice article on it. Basically:
- Boot into Recovery Mode (hold down cmd + R)
- Go to Utilities > Terminal
- a password reset facility comes up
- Reboot the machine!
A little bit insecure. I basically means anyone reading this article can reset anyones password and access their files (unless fileVault has been used which has a lot of issues with it)