For 64 bit clients, you need to feed pxe with amd64, not i386. So change your dhcpd.conf file to have /opt/ltsp/amd64 The /opt/ltsp/amd64 directory and the image should already have been created when you installed the LTSP server. Kind Regards, David <div class="gmail_quote">On Fri, May 16, 2008 at 8:44 PM, Nicolas Roussi <<a href="mailto:nroussi@gmail.com">nroussi@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Hi all, I just setup up an LTSP server on ubuntu 8.04 and the edubuntu add on package. I installed everything but when I connect a client it gives me the following: PXE-T01: File not found. PXE-E3B:TFTP Error - File not found The server is 64 bit and the clients are 64 bit capable. I did some digging and I found my /etc/ltsp/dhcpd.conf. This is what it has: # # Default LTSP dhcpd.conf config file. # authoritative; subnet <a href="http://192.168.0.0" target="_blank">192.168.0.0</a> netmask <a href="http://255.255.255.0" target="_blank">255.255.255.0</a> {     range <a href="http://192.168.0.20" target="_blank">192.168.0.20</a> <a href="http://192.168.0.250" target="_blank">192.168.0.250</a>;     option domain-name "<a href="http://example.com" target="_blank">example.com</a>";     option domain-name-servers <a href="http://192.168.0.1" target="_blank">192.168.0.1</a>;     option broadcast-address <a href="http://192.168.0.255" target="_blank">192.168.0.255</a>;     option routers <a href="http://192.168.0.1" target="_blank">192.168.0.1</a>; #    next-server <a href="http://192.168.0.1" target="_blank">192.168.0.1</a>; #    get-lease-hostnames true;     option subnet-mask <a href="http://255.255.255.0" target="_blank">255.255.255.0</a>;     option root-path "/opt/ltsp/i386";     if substring( option vendor-class-identifier, 0, 9 ) = "PXEClient" {         filename "/ltsp/i386/pxelinux.0";     } else {         filename "/ltsp/i386/nbi.img";     } } I know the error that PXE is giving me is  because I did not run this command <pre>ltsp-build-client --arch i386</pre>and the i386 image file is not created. My question is: Is it possible to have amd64 and i386 image files and select which one the thin client uses to boot? Maybe by modifying the if statement in dhcpd.conf or have options on boot of the thin client? Thanks -- Nicolas Roussi -- edubuntu-users mailing list <a href="mailto:edubuntu-users@lists.ubuntu.com">edubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/edubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/edubuntu-users</a> </blockquote></div>