How to reset admin password on Mac OS X

If you have just bought a MacBook or iMac from a garage sale or inherited one from a family member and realized that they didn't give you the admin password, or you're just forgetful, this is how you reset the password.

• Using a Mac OS install disk
• Without a Mac OS install disk

Using a Mac OS install disk

1. Turn on your Mac and boot from the install CD.
2. If you're using Mac OS X 10.6, navigate to
   Utilities » Password Reset
   and create a new admin password.
3. If you're using Mac OS X 10.4 or 10.5, navigate to
   Utilities » Reset Password
   and create a new admin password.
4. If you're using Mac OS X 10.3, navigate to
   Installer » Password
   and create a new admin password.

Without a Mac OS install disk

If you don't have an installer CD, it's still easy to reset the admin password.

1. Turn on your Mac and boot in single-user mode by pressing Apple+S.
2. Once it boots into single-user mode, you have to mount the hard disk in write mode, delete the .AppleSetupDone file under /var/db/ (note the dot before the filename because it's hidden) and reboot. Prior to this, we'll check the hard disk consistency with fsck So, type this:

   /sbin/fsck -y
   /sbin/mount -uaw
   rm /var/db/.AppleSetupDone
   reboot
   

3. Let me know how it goes. You can always contact me on email.

Last Updated on 14 December 2010