Ole Holm Nielsen wrote: > We have CentOS 6 manual installation working by PXE booting from a RHEL5.6 > PXE/TFTP server. However, when we add a Kickstart file in the PXE > configuration: > > kernel CentOS-6-i386/vmlinuz > append load_ramdisk=1 initrd=CentOS-6-i386/initrd.img network > ks=nfs:130.226.86.4:/u/rpm/kickstart/ks-centos-6-clean-i386.cfg > > then the CentOS 6 client install reports "Unable to download the kickstart file". > The console 3 reports "failed to mount nfs source". This problem has been resolved. A silly editing error replacing 5->6 also changed the IP-address :-( With the correct IP-address Kickstart works correctly with an NFSv3 server as shown above. No need to upgrade to NFSv4 and Kerberos :-) For the record, it is in fact possible to add NFS mount options to the PXE APPEND line, as documented in http://fedoraproject.org/wiki/Anaconda_Boot_Options. To explicitly force an NFSv3 mount you may add the following NFS mount option: ks=nfs:nfsvers=3:servername:filename Thanks again for everybody's help. /Ole