/lib/modules/ required?

I recently used yum to upgrade my Fedora version.

Before the upgrade I noticed that the original kernel rpm (from the original Linode image) was basically empty. That is, an "rpm -q -l kernel" listed a lot of files, but those files didn't actually exist.

Now that I've upgraded using yum, those files exist.

My understanding is that the kernel that is used when booting the UML instance isn't in the filesystem, and is compiled to not allow modules to be loaded.

So is it safe to remove /lib/modules and /boot/* to regain some disk space? Has anyone tried this?

Thanks,

–John