VMS Help Sys Parameters, BUGREBOOT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    BUGREBOOT enables or disables automatic rebooting of the system
    if a fatal bugcheck occurs. This parameter should normally be on
    (1);  set it off (0) only when the executive is being debugged.

    BUGREBOOT is a DYNAMIC parameter.