I have debian (aka xebian) running on my xbox as a loopback install.
i recompiled the kernel and am now trying to build the initial ramdisk using mkinitrd.
unfortunately im running into a problem. when i run:

mkinitrd -o /boot/inird.img-xbox
i get this error

xbox:/lib/modules# mkinitrd -o /boot/inird-
/usr/sbin/mkinitrd: /dev/loop/0: Unknown root device
                    Please refer to the manual page.
xbox:/lib/modules# /usr/sbin/mkinitrd: /dev/loop/0: Unknown root device
bash: /usr/sbin/mkinitrd:: No such file or directory
how would i go about getting around this problem?