On Tue, May 23, 2017 at 07:56:07PM +0200, Catonano wrote:
> > >   (file-systems (cons (file-system
> > >                         (device "my-root")
> > >                         (title 'label)
> > >                         (mount-point "/")
> > >                         (type "ext4")
> > >
> > >                       )
> > >                       %base-file-systems))
> 
> This is e2label
> 
> catonano@xps ~$ sudo e2label /dev/sda
> sda   sda1  sda2  sda3  sda5  sda6
> catonano@xps ~$ sudo e2label /dev/sda1
> boot
> catonano@xps ~$ sudo e2label /dev/sda2
> e2label: Valore magic non corretto nel super-blocco nell'aprire /dev/sda2
> /dev/sda2 contiene un file system swap
> catonano@xps ~$ sudo e2label /dev/sda3
> e2label: Attempt to read block from filesystem resulted in short read
> nell'aprire /dev/sda3
> Impossibile trovare un valido super-blocco per il file system.
> catonano@xps ~$ sudo e2label /dev/sda5
> root
> catonano@xps ~$ sudo e2label /dev/sda6
> home

The issue is that there is no filesystem with the label 'my-root'. Did
this configuration really work previously with the same partition and
filesystem layout?