Apple Service Diagnostic ASD S

Note ASD version numbers may change as diagnostics are updated. Important Unlike versions of ASD previously available for the MacBook Pro, ASD version 3S121 requires installation onto an external USB hard drive. Installing Apple Service Diagnostic on a USB hard drive 1. Connect the external USB hard drive to your Macintosh. 2. Open Disk Utility located in Applications Utilities . 3. Select the external USB hard drive. 4. Click the Partition tab to prepare the drive to be partitioned into two...