The kernel terminates all processes and tries to power off the system, however the system keeps running (the CPU cooler keeps spinning, Ethernet LEDs keep blinking, etc). Similarly shutdown -r (or pressing Ctrl-Alt-Del) does not actually reboot the system:
[ OK ] Stopped target Swap.
[ OK ] Reached target Unmount All Filesystems.
[ OK ] Stopped File System Check …7-9dd6-4fec-a81d-f34915a55420.
[ OK ] Removed slice system-systemd\x2dfsck.slice.
[ OK ] Stopped target Local File Systems (Pre).
[ OK ] Stopped Remount Root and Kernel File Systems.
[ OK ] Stopped File System Check on Root Device.
[ OK ] Stopped Create Static Device Nodes in /dev.
[ OK ] Reached target Shutdown.
[ OK ] Reached target Final Step.
[ OK ] Started Reboot.
[ OK ] Reached target Reboot.
[ 46.768905] reboot: Restarting system
The kernel terminates all processes and tries to power off the system, however the system keeps running (the CPU cooler keeps spinning, Ethernet LEDs keep blinking, etc). Similarly
shutdown -r(or pressing Ctrl-Alt-Del) does not actually reboot the system: