Creating Ubuntu USB sticks

Stefan Bader stefan.bader at canonical.com
Thu Jan 22 15:22:31 UTC 2015


On 22.01.2015 15:23, Rodney Dawes 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

That is the expected behaviour with that incantation. If you added a
"oflag=sync" dd should return only after write has finished. In your case you
use cached writes.

-Stefan

> 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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