Their Linux based rescue mode boots from network. I should probably specify though that I do this when setting up a new server. If you fail then it should sti

Their Linux based rescue mode boots from network. I should probably specify though that I do this when setting up a new server. If you fail then it should still be possible to select their Linux rescue image again from the Hetzner control panel and force reboot the server. I seem to recall that I had to try a couple of times before I got it right. And that I did exactly that; select their rescue image again and force reboot.