http://rubiojr.rbel.co/hack/2013/01/10/installing-arch-linux-in-your-android-phone-chroot/
NEED kpartx USE this LINK:http://christophe.varoqui.
now have PROBLEM , CANNOT CHROOT, DON'T KNOW WHY.....
[root@ArchLinux:~/ArchLinux] >>Sun Jan 12//21:52:04<<
# cat proc/versionLinux version 3.12.6-1-ARCH (tobias@testing-i686) (gcc version 4.8.2 (GCC) ) #1 SMP PREEMPT Fri Dec 20 19:54:53 CET 2013
[root@ArchLinux:~/ArchLinux] >>Sun Jan 12//21:52:06<<
# uname -a
Linux ArchLinux 3.12.6-1-ARCH #1 SMP PREEMPT Fri Dec 20 19:54:53 CET 2013 i686 GNU/Linux
[root@ArchLinux:~/ArchLinux] >>Sun Jan 12//21:52:10<<
# gcc --version
gcc (GCC) 4.8.2 20131219 (prerelease)
Copyright (C) 2013 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
[root@ArchLinux:~/ArchLinux] >>Sun Jan 12//21:52:20<<
# chroot /root/ArchLinux /bin/bash
chroot: failed to run command ‘/bin/bash’: Exec format error