Yoav Luft wrote:
mount /boot copied the kernel, reconfigurated grub, and rebooted.
You can also emerge debianutils (I think it's installed by default, but check first) which will enable you to do a "make install" instead of copying the files by hand to /boot. It will name the files correctly (vmlinuz symlink to vmlinuz-version along with System.map and config).
