To stop XWindows (and KDE) from starting on boot edit the /etc/inittab file and change
to
This starts your machine in runlevel 3 (everything except for X Windows). You can change the runlevel without rebooting the machine if you want by pressing ctrl+alt+f1 to get to a console login, logging in as root and doing:
Code:
telinit 3 #Stop X-Windows
or
Code:
telinit 5 #Start X-Windows again