@StarkRG@nixCraft a lot of old laptops had an accelerometer in the hard drive. I actually used this on my convertible Thinkpad x61t to rotate the screen, until I updated to a SSD...
@sur5r@StarkRG@nixCraft interesting 🤔 I really thought that it did disappear with the change to the SSD and old harddrive was listed to have an integrated free fall sensor, while various sites confirm your observation, that Thinkpads had a gyroscope on the Mainboard.
Gregory's Server
@mxk @StarkRG @nixCraft I'm pretty sure HDAPS is not part of the hard disk. I have an SSD in my x61t as well, but HDAPS is still there.