How do I make a bootable partition on the eMMC

I am running Angstrom from the microSD. I want to copy it to the onboard eMMC and boot from there. I’ve tried a number of things. I tried using BBB-eMMC-flasher-2013.09.04.img. The install fails, I never see all the LEDs lit. I’ve used mkfs.ext3 to create the eMMC partition, then rsync’d / to the new partition. So how should I copy Angstrom running on the microSD to the internal flash memory?