You don't have to install wheezy first and update to the RT/Preempt kernel (that will still work, but) the aforementioned image from cncbasher is wheezy 2.7 with a RT (RTAI) kernel. So everything is already pre-configured. Linux CNC both supports RTAI and RT/Preempt as RT kernels. According to this thread (
here
) RTAI typically has lower latency than Preempt-RT which is usually only important for software step generation and with RT/Preempt only being supported starting from LinuxCNC2.7 onwards.
Just install Wheezy/LinuxCNC from the *.iso and you are ready to roll. Well, you will still have to configure your CNC machine, but that's the way it is.
Bascially all you have to do is to:
1. Download the *.iso here:
www.linuxcnc.org/linuxcnc-2.7-wheezy.iso
2. Make the image bootable by either burning it to a DVD or installing it to a flash-drive with a program like UUI:
www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/
3. Boot the image on your new computer.
If you are unsure on whether or not to really install the system you can still use the live mode to try if everything is working as you hope it is or not. Just make sure to save the settings when working with the live system as you will lose them when going for the "full install" afterwards.
Hope that helped.
Sorry for the double post. By the time I finished my response you already had another one.
