I am getting testing failures when using my drive testing utility or when using Drive Setup. After setting the program up to do an extended test of the hard drive, I come back later (since the test takes a long time for large hard drives), and the system has either frozen or displays an error message that the drive is bad. If I replace the drive, and run the tests again, I often get similar results. Can you help?

Make sure to disable the Hard Disk Sleep feature of the Energy Saver software by setting Hard Disk Sleep to "never" in the Energy Saver control panel before testing. Otherwise, the drive may go to sleep in the middle of testing, which will cause the freezing or test failures you are experiencing.

Make sure that the drive has the latest version of the Apple hard disk driver, and any firmware updates that may be required for the drive, as these may also cause these types of symptoms.