not able to login with ubuntu 15.04

[Tom H]

On Thu, Nov 26, 2015 at 11:33 AM, Oliver Grawert <ogra at ubuntu.com> wrote:
> Am Donnerstag, den 26.11.2015, 14:38 +0530 schrieb abhishek jain:
>>
>> I'm not able to login the ubuntu image with ubuntu15.04 root file
>> system.I have downloaded the ubuntu-core-15.04-core-arm64.tar.gz image
>> from below link..
>>
>> http://cdimage.ubuntu.com/ubuntu-core/releases/15.04/release/
>>
> this ubuntu-core image is mainly used for chroots and build environments
> (it is not related to i.e. snappy ubuntu core)...
>
> there is no user setup or root password set and it has a cut down list
> of packages installed (just enough OS to run apt).
>
> it is a skeleton tarball for you to use as a base if you want to build
> something very minimal or need a chroot environment quickly. it is not
> "an OS for direct use", you would have to create a user or set a root
> password manually *before* first boot ...

It's too bad that Snappy Ubuntu Core wasn't named something else or
that ubuntu-core wasn't renamed after S-U-C was created.

(I suspect that the OP's looking for S-U-C.)