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Merge branch 'replace-4.0.1-install-warning'

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Andrew David Wong 2020-01-26 08:08:19 -06:00
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user/downloading-installing-upgrading/installation-guide.md
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Installation Guide
==================
### Qubes 4.0.1 Warning ###
<div class="alert alert-danger" role="alert">
<i class="fa fa-exclamation-circle"></i>
<b>Attention : </b> For those using Debian and Whonix templates, a vulnerability affects the latest stable Qubes OS release. Follow the instructions below to fix it.
</div>
<p>Immediately after installing Qubes 4.0.1, upgrade all of your Debian and Whonix TemplateVMs by executing the following commands in a dom0 terminal:</p>
$ sudo qubes-dom0-update --action=upgrade qubes-template-debian-9
$ sudo qubes-dom0-update --enablerepo=qubes-templates-community --action=upgrade qubes-template-whonix-gw-14
$ sudo qubes-dom0-update --enablerepo=qubes-templates-community --action=upgrade qubes-template-whonix-ws-14
These upgrades are required in order to be protected from the APT update mechanism vulnerability that was announced
and patched in [QSB #46], which followed the release of Qubes 4.0.1.
This method is simpler than the method recommended in [QSB #46], and it is just as safe/effective as long as it is performed immediately after installing Qubes OS.
Welcome to the Qubes OS installation guide!
This guide will walk you through the process of installing Qubes.
Please read it carefully and thoroughly, as it contains important information for ensuring that your Qubes OS installation is functional and secure.
Pre-installation
----------------