# sudo vi /etc/init/control-alt-delete.conf
Output
# control-alt-delete - emergency keypress handling## This task is run whenever the Control-Alt-Delete key combination is# pressed, and performs a safe reboot of the machine.description "emergency keypress handling"author "Scott James Remnant "start on control-alt-deletetaskexec shutdown -r now "Control-Alt-Delete pressed"
Change the following line
exec shutdown -r now "Control-Alt-Delete pressed"
To
#exec shutdown -r now "Control-Alt-Delete pressed"