The application creates a disk image on the flash card, mount it and install there OS distribution. Applications of the new system are run in a chroot environment and working in parallel with platform Android.
http://play.google.com/store/apps/details?id=ru.meefik.linuxdeploy
Kali Linux on Android http://www.kali.org/tutorials/kali-linux-android-linux-deploy/
Kali Linux Live USB Install Procedure http://docs.kali.org/downloading/kali-linux-live-usb-install
origin - http://www.pipiscrew.com/?p=2866 android-linux-deploy