How to check if free-fall sensor is enabled?

WD Internal Drives Desktop & Mobile Drives
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If the drive has this feature, it should be enabled. You can probably check the features of your hard disk on the WD site. If you want to know if it took place, then you need to read its SMART attribute. Can’t remember which one on top of my head, but a generic SMART reader should list out all available attributes and their value. If it increased vs the last time you checked it, then it G-sensed the free fall.