![]() It's important to try different cables, power cords, and different computers before concluding that the drive itself has failed. This can cost hundreds or even thousands of dollars. If none of the above utilities provide a solution, then there are drive recovery companies that may be able to read your data from the drive, literally bit by bit. The symptoms described above, especially the fact that the drive shows up as unpartitioned and unformatted, look grim. ![]() I believe, however, these utilities can only help with a basically physically healthy drive that has somehow a damaged directory. For instance, TechTool Pro, Disk Warrior, Drive Genius, etc. If you can hear it spin up and it sounds normal (it helps to have a healthy drive to compare with), you could try different drive utilities other than Apple's Drive Utility. A broken drive may make no noise, or may make a clicking noise, or may speed up and slow down. Are these spinning hard drives? If so, can you hear the drive spin up when it is connected and receives power? If you hold your ear to the drive enclosure when it is plugged in (try this with a healthy drive), you can hear the drive spin up and continue to spin. Both of these instances seem like what appears when a disk has a catastrophic hardware failure.
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