Description of problem:
I am running initrdless and grub2 is not quite managing to function when new kernels are available through yum. The failure to install is silent from the point of view of the yum user.

Version-Release number of selected component (if applicable):
grub2-1.99-13.fc16.i686

How reproducible:
100%

Steps to Reproduce:
1. use an initrdless setup (can't remember where I copied it from but it was along the lines of adding rootfstype=ext4 plymouth.disable=0 to the boot command line and removing the initrd files and config from grub)
2. install a new kernel from yum update
3. grub2 config is not updated
  
Actual results:
Old kernels remain in the grub menu

Expected results:
grub menu should reflect installed kernels

Additional info:
Running manually I can see that /dev/root is missing 


[root@bishop ~]# grub2-mkconfig > /etc/grub2.cfg 
/sbin/grub2-probe: error: cannot stat `/dev/root'.

-> so I manually create a /dev/root link:

[root@bishop ~]# ln -s /dev/sda3 /dev/root

-> I also remove the initrd:

[root@bishop ~]# rm /boot/initramfs-3.2.5-3.fc16.i686.img
rm: remove regular file `/boot/initramfs-3.2.5-3.fc16.i686.img'? y

-> remake grub config:

[root@bishop ~]# grub2-mkconfig > /etc/grub2.cfg 
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-3.2.5-3.fc16.i686
Found linux image: /boot/vmlinuz-3.2.3-2.fc16.i686
Found linux image: /boot/vmlinuz-3.2.2-1.fc16.i686
  No volume groups found
done

-> install succeeds now:

[root@bishop ~]# grub2-install /dev/sda
Installation finished. No error reported.

So currently I have to install manually or find what passes for rc.local under systemd?