initrd creation

[linux4all <wa7ch.emdebian@gmail.com>]

hello
i have built a basic rootfs with emsandbox create but the problem is : i have to execute the command emsecondstage that requires a chroot environment; i work under a X86 arch and the target is an arm arch; the solution is : i can use qemu to emulate it ;
my question is how can i create the initrd ??
thank u