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<p class="mac upgrade-mac"> Open <span class="application">Finder</span> and choose <span class="application">balenaEtcher</span> in <span class="guilabel">Applications</span>. </p>
<p class="windows upgrade-windows">
Open the <span class="application">balenaEtcher</span> download.
At the security warning, confirm that you want to open
<span class="application">balenaEtcher</span>.
<span class="application">balenaEtcher</span> starts.
<div class="bug windows upgrade-windows">
<p>If <i>balenaEtcher</i> does not start, restart Windows and try again.</p>
[[!img install/inc/screenshots/etcher_in_mac.png class="mac upgrade-mac" link="no" alt=""]]
[[!img install/inc/screenshots/etcher_in_windows.png class="windows upgrade-windows" link="no" alt=""]]
<h1 id="install" class="step">Install <span class="upgrade">an intermediary</span> Tails using <em>balenaEtcher</em></h1>
<div class="step-image usb">[[!img install/inc/infography/install-tails.png link="no" alt=""]]</div>
<div class="step-image upgrade">[[!img install/inc/infography/install-upgrade-usb-only.png link="no" alt=""]]</div>
Plug in the USB stick on which you want to install <span class="usb">Tails.</span> <span class="upgrade">the intermediary Tails.</span>
<div class="note upgrade"><p>The Persistent Storage of your Tails USB stick will not be
copied to the temporary Tails.</p></div>
Click the **Flash from file** button.
Choose the USB image that you downloaded earlier.
<div class="note">
<p>Make sure that the USB image has an
<span class="filename">.img</span> file extension.</p>
<p>If the image has an <i>.iso</i> file
extension, it is not the correct image. Please go back to the
<span class="windows">[[download step|windows#download]].</span>
<span class="mac">[[download step|mac#download]].</span>
<span class="upgrade-windows">[[download step|upgrade/windows#download]].</span>
<span class="upgrade-mac">[[download step|upgrade/mac#download]].</span></p>
Click the **Select target** button to select your USB stick.
<div class="caution"><p>All the data on this USB stick will be lost.</p></div>
Click <span class="bold">Flash</span>.
Enter your password if you are asked for it.
The installation takes a few minutes.