Apple Service Diagnostics (2005-2013) [En]

Apple Service Diagnostic tests the hardware for correct operation.
Apple Service Diagnostic (EFI) performs low-level tests
of hardware directly and does not require an operating system to run.
Apple Service Diagnostic OS tests use an OS X operating system to perform tests.
Building the bootable USB drive
Refer to Creating a ASD USB Bootable Drive.pdf document.
Booting and using the Apple Service Diagnostic application
Before using Apple Service Diagnostic disconnect any Ethernet network,
USB and Audio cables. Plug in the ASD USB drive.
With the USB drive plugged into a USB port restart the machine and hold down
the option key as the computer boots up into the system picker.
To run EFI tests select the ASD EFI drive icon and press return or select it with a mouse click.
To run OS tests select theASD OS drive icon and press
return or select it with a mouse click. For EFI tests the application will boot in 20-30 seconds.
For OS tests the application will boot in 2-3 minutes.
After running EFI or OS diagnostics press the Restart button to restart the Mac
and hold down the option key to get back to the system picker
or do nothing to get back to the normal boot drive.

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