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How to create your first NetInstall Image

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<p>Before you can turn the NetInstall service on you need to create a network disk image to boot from. The easiest image to create is a NetInstall image, which lets you install or update an operating system on any Mac.</p><h2>Download a fresh copy of El Capitan</h2>

<p>Before you can create a NetInstall image you need to make sure you have a fresh copy of the El Capitan installer downloaded to your hard drive.</p><ol>
<li>Open the App Store on your Mac with the Server app installed.</li>
<li>Click the Purchased tab in the App Store.<figure class="medium inline" itemprop="associatedMedia" itemscope="" itemtype="http://schema.org/ImageObject" itemid="(http://[img]http://images.techhive.com/images/article/2016/06/purchased-100667612-medium.png)[/img]">
<a href="(http://images.techhive.com/images/article/2016/06/purchased-100667612-orig.png)" class="zoom"><img src="(http://[img]http://images.techhive.com/images/article/2016/06/purchased-100667612-medium.png)[/img]" height="80" width="300" alt="purchased"/>[/url]</figure>
</li>
<li>Locate OS X El Capitan in the list of purchased apps.</li>
<li>If you see OS X El Capitan in the list, make sure it says Downloaded on the button next to the installer app.<figure class="large " itemprop="associatedMedia" itemscope="" itemtype="http://schema.org/ImageObject" itemid="(http://[img]http://images.techhive.com/images/article/2016/06/downloaded-100667609-large.png)[/img]">
<a href="(http://images.techhive.com/images/article/2016/06/downloaded-100667609-large970.idge.png)" class="zoom"><img src="(http://[img]http://images.techhive.com/images/article/2016/06/downloaded-100667609-large.png)[/img]" height="66" width="580" alt="downloaded"/>[/url]</figure>

If it doesn’t:
<ul>
<li>Click Download.</li>
<li>Wait...</li>
</ul></li>
<li>If you don’t find OS X El Capitan in your list of purchased apps:
<ul>
<li>Click the App Store’s Featured tab.</li>
<li>Locate and click OS X El Capitan in the Quick Links section of the App Store.<figure class="small inline" itemprop="associatedMedia" itemscope="" itemtype="http://schema.org/ImageObject" itemid="(http://[img]http://images.techhive.com/images/article/2016/06/el-capitan-100667610-small.png)[/img]">
<a href="(http://images.techhive.com/images/article/2016/06/el-capitan-100667610-orig.png)" class="zoom"><img src="(http://[img]http://images.techhive.com/images/article/2016/06/el-capitan-100667610-small.png)[/img]" height="309" width="140" alt="el capitan"/>[/url]</figure>
</li>
<li>Click the Download button for El Capitan.</li>
<li>Sign in using your Apple ID if you’re asked to do so.</li>
<li>Wait...</li>
</ul></li>
</ol>

<h2>Create a NetInstall image</h2>

<p>Once you have a fresh copy of El Capitan you can create your first image.</p><p class="jumpTag"><a href="/article/3086908/macs/how-to-create-your-first-netinstall-image.html#jump">To read this article in full or to leave a comment, please click here[/url]</p></section></article>

Source: How to create your first NetInstall Image (http://www.macworld.com/article/3086908/macs/how-to-create-your-first-netinstall-image.html#tk.rss_all)