That could be an issue with the specific laptop rather than your usb creation method. Some UEFI are locked to Windows only or Windows and RHEL only. Such as with http://mjg59.dreamwidth.org/20187.html
On 22 January 2015 at 14:23, Rodney Dawes <rodney.dawes@canonical.com> wrote:
I've been trying to create one recently, under 14.04 running the
lts-utopic kernel. It seems the old problem of flushing is back. When I
run "dd if=ubuntu-14.04.1-amd64.iso of=/dev/sdg bs=4096" it exits almost
immediately, and then the LED on the USB spends the next several minutes
flashing constantly as if data is being written. When it is done
however, it seems I can't actually boot from it.
I want to re-install my laptop, using UEFI only (ideally with secure
boot, but I don't know if it is possible), and full disk encryption, but
I just can't seem to get a working bootable USB stick made. :-/
On Thu, 2015-01-22 at 12:03 +0100, Daniel Holbach wrote:
> Hello everybody,
>
> in the past few weeks I saw the discussion about what was the best way
> to create Ubuntu USB sticks a couple of times. It looks like USB Creator
> and Testdrive didn't get as much love as they used to do in the past
> (please correct me if I'm wrong). I also noticed that
> https://wiki.ubuntu.com/Unity8DesktopIso under "Creating the image"
> mentions using "Disks" and heard that it's more reliable.
>
> Would it make sense to start updating our documentation? Is this what we
> all can agree on?
>
> The following pages (at the very least) would need an update:
>
> https://wiki.ubuntu.com/Jams/Testing
> https://wiki.ubuntu.com/UsingDevelopmentReleases
> https://wiki.ubuntu.com/QATeam/Testdrive
> https://wiki.ubuntu.com/QATeam/DevelopmentSetup
> http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-ubuntu
>
> Have a great day,
> Daniel
>
> --
> Get involved in Ubuntu development! http://packaging.ubuntu.com
> Follow @ubuntudev on twitter.com/facebook.com/G+
>
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