When astrogation computers registered a sun, the hyperdrive inhibitor module prevented the ship from getting out of hyperspace near the star, it did so by making the nav computer program boot. It was possible, but dangerous, to disengage the inhibitor.
It was in use since the Old Republic, at least, and most starships carried hyperdrive inhibitors. Failure of the device would be fatal if the ship jumped to a location too close to a star.
The planet Sedri was registered as a huge sun by starships, due to the entity called Golden Sun. That way the planet remained hidden from galactic technology for centuries, until an Imperial scout found it by accident. Yet the only way to travel to Sedri involved disabling the hyperdrive inhibitor, and many ships were lost.
The Galactic Empire tried to control the Golden Sun, that would have allowed them to hide Imperial fleets and planet as hyperdrive inhibitors would detect them as stars. However the Golden Sun vanished and regular travel to Sedri became possible.
- Scoundrel's Luck (As "hyperdrive cut-out")
- Battle for the Golden Sun (First appearance)
- Scavenger Hunt