So, here is my problem: I installed upstart on my raspbian (jessie) yesterday. After i tried to reboot the system, the boot loader didn't load any further.
The problem is, that the sd card is in my pi which is unreachable anymore since i installed the pi in my robot (and i would have to break the body to get to the sd card). My question now is, is it possible to get into the rescue menu? If not, are there any other viable options?