To change this setting, log in with an administrator account. If you don't have an administrator account, or if your account is managed and you do not have access to change Classic preferences, a person with an administrator account will need to assist you.
After logging in with an administrator account, follow these steps:
- From the Apple menu, choose System Preferences.
- From the View menu, choose Classic.
- Click Start/Stop.
- Click Stop.
- Click Advanced.
- Modify the "Use Mac OS 9 preferences" option as desired.
- Click Start/Stop.
- Click Start.