Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In computer hardware, active hard drive protection refers to technology that attempts to avoid or reduce mechanical damage to hard disk drives by preparing the disk(s) prior to impact. This approach is mainly used in laptop computers that are frequently carried around and more prone to impacts than desktop computers. Usually the system consists of accelerometers that alert the system when excess acceleration or vibration is detected. The software then tells the hard disk to unload its heads to prevent them coming in contact with the platter, thus potentially preventing head crash. This technology only engages if the hard drive is running at the moment of impact. Modern hard drives are designed to unload their heads when they lose power.

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