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xmlns:if="http://projectmallard.org/if/1.0/"
type="topic" style="task" version="1.0 if/1.0"
id="disk-check">
<info>
<link type="guide" xref="disk"/>
<credit type="author">
<name>GNOME Documentation Project</name>
<email>gnome-doc-list@gnome.org</email>
</credit>
<credit type="author">
<name>Natalia Ruz Leiva</name>
<email>nruz@alumnos.inf.utfsm.cl</email>
</credit>
<credit type="editor">
<name>Michael Hill</name>
<email>mdhillca@gmail.com</email>
</credit>
<revision pkgversion="3.4.0" date="2012-02-19" status="review"/>
<revision version="13.10" date="2013-09-07" status="review"/>
<desc>Test your hard disk for problems to make sure that it's healthy.</desc>
<include href="legal.xml" xmlns="http://www.w3.org/2001/XInclude"/>
</info>
<title>Check your hard disk for problems</title>
<section id="disk-status">
<title>Checking the hard disk</title>
<p>Hard disks have a built-in health-check tool called <app>SMART</app>
(Self-Monitoring, Analysis, and Reporting Technology), which continually
checks the disk for potential problems. SMART also warns you if the disk
is about to fail, helping you avoid loss of important data.</p>
<p>Although SMART runs automatically, you can also check your disk's
health by running the <app>Disks</app> application:</p>
<steps>
<title>Check your disk's health using the Disks application</title>
<item>
<if:choose>
<if:when test="platform:unity">
<p>Open the <app>Disks</app> application from the <gui>Dash</gui>.</p>
</if:when>
<p>Open the <app>Disks</app> application from the <gui>Activities</gui>
overview.</p>
</if:choose>
</item>
<item>
<p>Select the disk you want to check from the <gui>Storage Devices</gui> list.
Information and status of the disk will appear under <gui>Drive</gui>.</p>
</item>
<item>
<p><gui>SMART Status</gui> should say "Disk is healthy".</p>
</item>
<item>
<p>Click the <gui>SMART Data</gui> button to view more drive information, or
to run a self-test.</p>
</item>
</steps>
</section>
<section id="disk-not-healthy">
<title>What if the disk isn't healthy?</title>
<p>Even if the <gui>SMART Status</gui> indicates that the disk <em>isn't</em>
healthy, there may be no cause for alarm. However, it's better to be prepared
with a <link xref="backup-why">backup</link> to prevent data loss.</p>
<p>If the status says "Pre-fail", the disk is still reasonably healthy but
signs of wear have been detected which mean it might fail in the near future.
If your hard disk (or computer) is a few years old, you are likely to see
this message on at least some of the health checks. You should
<link xref="backup-how">backup your important files regularly</link> and check
the disk status periodically to see if it gets worse.</p>
<p>If it gets worse, you may wish to take the computer/hard disk to a
professional for further diagnosis or repair.</p>
</section>
</page>
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