Installing a rootfs
Mount your root partition (we assume for this example that /dev/mmcblk0p3 is the root partition):
mkdir -p /mnt/extern/ mount /dev/mmcblk0p3 /mnt/extern/
TODO: write about debootstrap.
Download and extract the latest stage3 tarball to your rootfs, whilst preserving the permissions:
Download and extract the Portage package manager: