> > >   Note: Its probably enough to mount / rw and start the script.
> > 
> >  How?
> 
>   mount / ?
> 
>   You can check the installation script to see how the script does it.

 This is no good. The script runs

  mount -u /kern/rootdevice / >/dev/null 2>&1

 If I run it w/o the redirections, it just tells me that the device is
 not recorded anywhere on disk (or similar - typing this from memory),
 and / remains read-only.