sudo DEBUG_DISK=1\
     ./ubuntu-device-flash --verbose core 16 \
     -o dragon-all-snap.img \
     --channel edge \
     --enable-ssh \
     --gadget canonical-dragon \
     --kernel canonical-snapdragon-linux \
     --os ubuntu-core
     #--gadget ~/devel/snappy-hub/snappy-systems/dragonboard/canonical-dragon_0.6_all.snap  \
     #--kernel ~/devel/mksnap-os-kernel/canonical-dragon-linux_4.4.2.0-2009-3_arm64.snap \
     #--os ~/devel/mksnap-os-kernel/ubuntu-core_16.04.0-3_arm64.snap