.. include:: /urls.rst

.. _pureos_image:

Installation image
==================

.. _pureos_image_download:

Download the image
------------------

System images are typically distributed as ISO files (``*.iso`` filetype), but may also come as a compressed system image (e.g. ``FileName.xz``).

The first step to install PureOS is to download and verify the integrity of the PureOS hybrid live/install ISO image.

`Download PureOS`_ and select the latest hybrid install/live PureOS ISO image.

.. _pureos_image_verify:

Verify the image
----------------

When the download is complete, make sure to check that the sha256 checksum hash matches to the one calculated for your downloaded ISO.
This ensures that the download completed successfully and the file is not corrupted.
You can calculate the checksum using ``sha256sum`` utility (run this in your terminal):

.. code-block:: bash

   sha256sum ~/Downloads/pureos-8.0-gnome-live_20180904-amd64.hybrid.iso

(provided that you downloaded the image to your Downloads folder).

.. note::
   The ISO image date string (**20180904**) may differ.

You can alternatively use a graphical utility called **GtkHash**, which may be obtained from the Software center:

.. image:: ../img/install/gtkhash.png
   :scale: 50%
   :alt: GtkHash checksum verification