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A hard drive may be inaccessable due to physical/mechanical failure, which is different from logical errors on the disk. This article relates to a drive that is physically or mechanically failing. You have a last chance to recover data before the drive fails completely, making the data inaccessible without actually opening the drive.Data on a [[hard drive]] may be inaccessible due to physical/mechanical failure, which is different from logical errors on the disk. This article relates to a drive that is physically or mechanically failing. You have a last chance to recover data before the drive fails completely, making the data inaccessible without actually opening the drive.