Hi, I had found that the instructions for compiling a custom kernel on Fedora at http://fedoraproject.org/wiki/Building_a_custom_kernel worked very well. And so they do. However, as they are written, they do not take into account the changes that are made to the .config file after it is edited, for x86_64. This is because they call for the writing of it to ~/rpmbuild/SOURCES/config-x86_64. The kernel.spec file in ~/rpmbuild/SPECS only allows the following as valid config files (at least that is how I interpret it): Source21: config-debug Source22: config-nodebug Source23: config-generic Source24: config-rhel-generic Source30: config-x86-generic Source31: config-i586 Source32: config-i686-PAE Source40: config-x86_64-generic Source50: config-powerpc-generic Source51: config-powerpc32-generic Source52: config-powerpc32-smp Source53: config-powerpc64 Source54: config-powerpc64-kdump Source60: config-ia64-generic Source70: config-s390x Source90: config-sparc64-generic Source91: config-sparc64-smp Source100: config-arm So either a description of how to add another line in the kernel.spec file could be included so that the instructions as written are valid: Add the line: Source41: config-x86_64 immediately after the line Source40: config-x86_64-generic Note that I didn't test this option, I'm just presuming it will be true based on the logic of it. Or the instructions could be changed from 6. Copy the config file to ~/rpmbuild/SOURCES/: cp .config ~/rpmbuild/SOURCES/config-$arch to 6. Replace the appropriate config file in ~/rpmbuild/SOURCES/ by copying the .config file you just created: cp .config ~/rpmbuild/SOURCES/config-$arch[-generic] Determine your choice of destination by listing the existing config files and replacing one of them: ls ~/rpmbuild/SOURCES/config* I used this method and it worked. I noticed this because as I was building the latest kernel packages I saw that drivers for ISDN were being built, and I had deselected them. When I compared the config files in /boot from my custom kernel and the Fedora kernel, they were identical! Once I replaced config-x86_64-generic with my custom .config, I was able to shrink the kernel down to half the generic size by eliminating all the functionality I don't use, but that Fedora has to include in its kernels because they have a broad target. And I'm still pursuing this, whittling away chunks as I come to understand them (the descriptions in menuconfig don't always make it clear if I need it or not on my hardware). The rpm build time has decreased dramatically, and the system seems more stable and snappy (Ha!, that's probably placebo, but maybe not.) -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines