Hi,
After tweaking installed packages, running "tazusb writefs lzma", and copying rootfs.gz to /boot, I am unable to boot with this root fs. I get messages related to a missing /run, then the kernel panics ("attempted to kill init" or the like).
On inspection of the cpio archive, it lacks /run indeed. Changing line 462 of tazusb from:
for dir in /home /proc /sys /tmp /mnt /media /media/cdrom /media/flash /media/usbdisk
to:
for dir in /home /proc /run /sys /tmp /mnt /media /media/cdrom /media/flash /media/usbdisk
seems to solve the problem.
HTH