So, it looks like you're moving the Alpha kernels to /boot
instead of storing them in /. This requires changing the
boot parameters and should be clearly documented for the
upgrade. It fact it would probably be worth a screen at the
end reminding the user to make the change.

When I upgraded my system and didn't change the boot
parameters my system came up with my old kernel and during
the boot it complained a lot about the System.map not
matching the kernel version.