If simply load standart initrd made by well known cat4321>rootfs - it works!
Loading it, running tazusb writefs gzip, overwriting initrd to new, reboot - error.
I tried both gzip and lzma, rc1 and last rolling, (really, every time before load I checked for right kernel bzimage file) add or remove root=/dev/null kernel option - all kernel panic.
root=/dev/ram, I found while searching also not helpful.
but in april version (before RC1) it just works.
/init not changed. I was even tried to overwrite /usr/bin/tazusb to before-rc1-version - no changes.
There was dbus loading problem since rc1- due to rewritten rcS. Maybe this is some connections.
i never use any NTFS on this drive. Two images for different kernel options (/dev/null...)