Hi Junjiro,

> > > Are you sure that switchroot returns 0?
>
> Will you answer my question?

switchroot doesn't have exit code. switchroot replaces the current process  
(the init in initrd) and then executes the new init.

> > > You moved /etfw/.etfw_changes branch under /filesystem and you would
> > > see it after switchroot.
> >
> > Yes.
> >
> > > How about /cdrom and /etfw branches? If you use
> > > initramfs, can you see it after switchroot?
> >
> > I see it in my /proc/mounts:
>
> Do you use initramfs?

No, I use an ext2 initrd.

> Can you ls(1) to them after switchroot?

switchroot moves the specified diretory to /. What was before that directory 
can't be accessed anymore.

Regards,
Fernando Gomes

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