Dual-Boot Capability on Any Rockchip Devices?

[aretoo]

hi all, are there any known cases of a rockchip device dual booting? android/android or android/linux or? I see that dual booting is possible on some others like here: http://www.androidtablets.net/forum...cal/52475-how-dual-boot-via-lenovo-a2109.html and to begin we must modify the boot.img and meta.inf but has anyone knowledge of this working on rockchips? thanks