Setting up udev (228-4ubuntu2) ...
addgroup: Il gruppo «input» già esiste come gruppo di sistema. Uscita.
update-initramfs: deferring update (trigger activated)
insserv: Service mountkernfs has to be enabled to start service udev
insserv: exiting now!
update-rc.d: error: insserv rejected the script header
dpkg: error processing package udev (--configure):
 subprocess installed post-installation script returned error exit status 1