. The serial number is listed at the bottom of the overview window. System Information : For more detailed hardware data, hold the key and click Apple menu () > System Information in the sidebar; the serial number will appear on the right. : If you prefer a command-line interface, open the app (found in /Applications/Utilities/ ) and enter the following command: ioreg -l | grep IOPlatformSerialNumber Method 2: Physical Inspection (Powered Off)

Best for: Proof of purchase for insurance or warranty claims.

“No luck,” Eloise admitted. “So we use the second method: Terminal in Recovery Mode.” She pressed the power button while holding . After a long thirty seconds, the familiar globe icon appeared—Recovery Mode.