Hi, I am trying to build a custom fedora kernel on a fedora (FC15) machine by reading the article: http://fedoraproject.org/wiki/Building_a_custom_kernel but i am unable to make any progress as my changes are not getting reflected. So I have query about the procedure given in the article. The article asks to first create hardliks between files in .new and .orig directories and then to make changes and to .new directory and to generate a patch by a diff between the .orig and .new directories. But I am just wondering if the files in both the directories are hardlinks then how can diff work because after changing a file in .new directory the file in .orig directory should also change. cp -r ~/rpmbuild/BUILD/kernel-2.6.$ver.$fedver/linux-2.6.$ver.$arch ~/rpmbuild/BUILD/kernel-2.6.$ver$fedver.orig cp -al ~/rpmbuild/BUILD/kernel-2.6.$ver.$fedver.orig ~/rpmbuild/BUILD/kernel-2.6.$ver.$fedver.new cd ~/rpmbuild/BUILD diff -uNrp kernel-2.6.$ver.$fedver.orig kernel-2.6.$ver.$fedver.new > ../SOURCES/linux-2.6-my-new-patch.patch Thanks Vaibhav Jain