Code Listing 5.4: Compiling and installing the new kernel # make && make modules_install # mount /boot # cp arch/i386/boot/bzImage /boot/bzImage-2.6.9-gentoo-r2 <---- this line IMO replacing marked line above with "make install" would result in much cleaner and simpler upgrade procedure. It creates convenient symlinks in /boot, copies config and System.map files and automatically labels them with kernel version string.
There's no need to copy the System.map (kernel folks say so) or .config (can be taken from /proc). And doing something "by hand" is always much cleaner and simplier than using a script for that. Thanks for reporting anyway.
*** Bug 406963 has been marked as a duplicate of this bug. ***