Booting snappy on a laptop configuration?

[Sebastien Bacher]

Hey there,

I'm trying to get a snappy image on an usb stick to boot on an amd64
laptop but not really having luck so far.

What I did, on the laptop using vivid/amd64:
- enabled the ppa:snappy-dev/beta
- upgraded/installed snappy-tools
- used "sudo u-d-f core 15.04 -o iso.img"
- sudo "dd if=iso.img of=/dev/sdb bs=32M"

the usb stick is not seen as a valid boot option by my inspiron 11 3000
(the machine seems to only list devices that are correctly setup for
uefi/secure boot, I had issues in the past trying to boot from a 32 bits
Ubuntu image, that never worked). On my other laptop the key is seen and
I can boot on it but the boot doesn't lead to a prompt/login

Does anyone successed before to get snappy working on a laptop/usb key?
Is there something special to uefi working?

Thanks,
Sebastien Bacher