Crash Site

Wreckage can be found all across the World. Scattered around the wreckage will be various components such as wires or computers. There will also be a Drop pod that (usually) needs to be repaired in order to access the Hard Drive inside it. Wreckage is generally either located at hard-to-access area, or guarded by large creatures. Some of the wreckage may be located inside poison gas.

How To Get The Hard Drive
First the drop-pod needs to be repaired. Open the drop-pod's UI to find out what specific items need to be present in the Engineer's Inventory. Additionally the drop-pod may requires Power to be repaired. Build temporary Biomass Burners or Coal Generators to supply it with temporary power, or connect it to a power grid. The supplied power must not less than the required power else there will be a power trip.

When the requirements are fulfilled the handle on the drop-pod UI can be dragged down, opening a hatch and allowing the Engineer to retrieve the Hard Drive.

Location
There are several fan-made in-game maps listing drop pod locations. Since a recent patch in Early Access and after appropriate research in the MAM, you can use the Object Scanner to search for drop pods.

Rewards

 * Hard Drive