<page xmlns="http://projectmallard.org/1.0/"
      xmlns:if="http://projectmallard.org/if/1.0/"
      type="topic" style="task" version="1.0 if/1.0"
      id="disk-check">
  <info>

    <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>
