What does 'Completed without error' mean in a self-test?

• A. The drive encountered unreadable sectors — failing hardware.
• B. Drive passed the test with no issues.
• C. The test completed but data was corrupted.
• D. The test terminated due to power loss.

Answer: (B)

In this context, completed without error means the drive’s self-test finished and found no problems during the tests it performed. All tested operations—like reading and writing data in the checked areas—completed successfully, and no error codes or mismatches were reported.

This indicates the tested components and surfaces are healthy at the time of the test. It doesn’t guarantee every possible sector will always be perfect or that future failures can’t occur, but it does mean there were no faults detected during that run.

The other possibilities would involve the test reporting failures or interruptions: unreadable sectors would trigger an error, data corruption would be flagged as a problem, and a power-loss interruption would prevent the test from completing.