How to boot from NAND

[mike303]

Hi,

i have a CubieBoard A20 from ebay and it works well good.
I have also a booting SD-card with ArchLinux (use this tutorial http://archlinuxarm.org/platforms/armv7/allwinner/cubieboard)

After booting from SD-card, i install the rootfs from above to the /dev/nandb.
But i can't find the right information how to boot from nand.
At this point, when i try to boot without SD-card i get only
'waiting for rootfs on /dev/mmcblk0p1....'
Can anybody explain how the cubie can boot from nand...?

Thanks and greetings