into a different boot unit, for example rescue.target or emergency.service. See systemd.special(7) for
           details about these units. The option prefixed with "rd."  is honored only in the initrd, while the one that is not prefixed only in the main system.

       systemd.dump_core
           Takes a boolean argument or enables the option if specified without an argument. If enabled, the systemd manager (PID 1) dumps core when it crashes. Otherwise, no core dump is created. Defaults to enabled.

       systemd.crash_chvt
           Takes a positive integer, or a boolean argument. Can be also specified without an argument, with the same effect as a positive boolean. If a positive integer (in the range 1–63) is specified, the system manager
           (PID 1) will activate the specified virtual terminal when it crashes. Defaults to disabled, meaning that no such switch is attempted. If set to enabled, the virtual terminal the kernel messages are written to is
           used instead.

       systemd.crash_shell
           Takes a boolean argument or enables the option if specified without an argument. If enabled, the system manager (PID 1) spawns a shell when it crashes, after a 10s delay. Otherwise, no shell is spawned. Defaults
           to disabled, for security reasons, as the shell is not protected by password authentication.

       systemd.crash_reboot
           Takes a boolean argument or enables the option if specified without an argument. If enabled, the system manager (PID 1) will reboot the machine automatically when it crashes, after a 10s delay. Otherwise, the
           system will hang indefinitely. Defaults to disabled, in order to avoid a reboot loop. If combined with systemd.crash_shell, the system is rebooted after the shell exits.

       systemd.confirm_spawn
           Takes a boolean argument or a path to the virtual console where the confirmation messages should be emitted. Can be also specified without an argument, with the same effect as a positive boolean. If enabled, the
           system manager (PID 1) asks for confirmation when spawning processes using /dev/console. If a path or a console name (such as "ttyS0") is provided, the virtual console pointed to by this path or described by the
           give name will be used instead. Defaults to disabled.

       systemd.service_watchdogs=
           Takes a boolean argument. If disabled, all service runtime watchdogs (WatchdogSec=) and emergency actions (e.g.  OnFailure= or StartLimitAction=) are ignored by the system manager (PID 1); see systemd.service(5).
           Defaults to enabled, i.e. watchdogs and failure actions are processed normally. The hardware watchdog is not affected by this option.

       systemd.show_status
           Takes a boolean argument or the constants error and auto. Can be also specified without an argument, with the same effect as a positive boolean. If enabled, the systemd manager (PID 1) shows terse service status
           updates on the console during bootup. With error, only messages about failures are shown, but boot is otherwise quiet.  auto behaves like false until there is a significant delay in boot. Defaults to enabled,
           unless quiet is passed as kernel command line option, in which case it defaults to error. If specified overrides the system manager configuration file option ShowStatus=, see systemd‐system.conf(5).

       systemd.status_unit_format=
           Takes name, description or combined as the value. If name, the system manager will use unit names in status messages. If combined, the system manager will use unit names and description in status messages. When
           specified, overrides the system manager configuration file option StatusUnitFormat=, see systemd‐system.conf(5).

       systemd.log_color, systemd.log_level=, systemd.log_location, systemd.log_target=, systemd.log_time, systemd.log_tid
           Controls log output, with the same effect as the $SYSTEMD_LOG_COLOR,