If you have dracut-network installed you have to add network and nfs 
modules to your dracut.conf or pass them as parameters while generating the 
initrd.

Am Freitag, 12. Juni 2015 09:39:39 UTC+2 schrieb Juan RP:
>
>
> I haven't tried NFS nor TFTP, but make sure you've got the 
> `dracut-network` package.
>