Two roots mounted

[Dmytro Bablinyuk]

 > Kernel does it even before it starts your init (both rootfs and 
/dev/<something>,

What I discovered is when I build buildroot strait away I am getting 
this sort of behaviour - but if I remove 
'buildroot/build_powerpc/busybox/busybox' executable and then 'make' 
again (please note - nothing changed, I am not even cleaning objects) it 
builds filesystem (and 'busybox') where I have 'correct' mount
 > mount
/dev/mtdblock1 on / type jffs2 (rw, noatime)
...
So, it looks like depends on filesystem and somehow on busybox. Probably 
I am missing something. Any ideas?