Macintosh OSX Service Notes

Finder

Hold down the command key down while pressing tab multiple times until Finder is highlighted in the pop-up list.

Network preference

1. Open System Preferences and click the Network panel icon
2. Click the interface you want to configure (probably Ethernet or Wi-Fi).
3. Advanced button, etc. all settings.

Apple Diagnostics

Turn on your Mac, then immediately press and hold the D key on your keyboard. Keep holding until you see a screen asking you to choose your language. When Apple Diagnostics knows your language, it displays a progress bar indicating that it's checking the Macintosh. If any issues are found, Apple Diagnostics suggests solutions and provides reference codes.

Sometimes holding D wont kick off the diagnostics, so then you can hold down Option-D at startup to attempt to start Apple Diagnostics over the Internet.

further options:

click ”Get started” or press Command-G to make the Macintosh start from macOS Recovery and displays a web page asking you to choose your country or region. Click ”Agree to send” to send your serial number and reference codes to Apple. Then follow the onscreen service and support instructions. When you're done, you can choose Restart or Shut Down from the Apple menu.

Terminal

Open Terminal / Command Prompt

1. Click the Finder icon on the bottom.
2. Click Applications on the left pane.
3. Click Utilities.
4. Click Terminal.

Hard reset terminal emulator state	Control-Option-Command-R

external resources

• Mac OSX Terminal (command-line tips and tricks)