Turóczy Attila wrote:
/boot/grub/menu.lst in this file delete the old kernel's text. If you wanted delete the old kernel u delete this dir. /usr/src/kernels/kernel_old_version /lib/modules/kernel_old_version
This might apply if you're building your own kernels but I suspect the OP is just using the official Fedora kernel update packages, in which case they should be removed using rpm, or a front-end such as yum or package-cleanup.
Paul.