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<h1 class="topictitle1">Clear partition configuration data from nonconfigured disk units</h1>
<div><p>When you move disk units among logical partitions or servers, you
may need to erase any old configuration data before the server can use the
logical partition again.</p>
<div class="section"><p>You need to clear the configuration data when the disk unit has
all of the following characteristics:</p>
<ul><li>A system reference code (SRC) of B600 5311 displays in the product activity
log (PAL) against a nonconfigured disk unit.</li>
<li>It is no longer a load source in its own logical partition.</li>
<li>It is originally from a different logical partition where it was a load
source, or it is from a different server that had logical partitions.</li>
</ul>
<p>This procedure erases only logical partition data. No system or user
data is affected.</p>
<p>Perform this procedure from a dedicated service tools
(DST) display:</p>
</div>
<ol><li><span>Go to the DST menu.</span></li>
<li><span>Select option 11 (Work with system partitions).</span></li>
<li><span>Select option 4 (Recover configuration data).</span></li>
<li><span>Select option 3 (Clear non-configured disk unit configuration data).</span></li>
<li><span>Select the disk unit with the configuration data you want to erase.
Type a 1 in the Opt field to the left of the disk unit listing.</span></li>
<li><span>Press the Enter key.</span></li>
<li><span>Confirm that you truly do want to erase the configuration data.</span></li>
<li><span>The changes take effect immediately.</span></li>
</ol>
</div>
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<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaitrecwork.htm" title="Use DST and SST to clear, copy and update configuration data, to configure nonconfigured disk units, to clear nonreporting resources, to accept a disk unit as a load source, and to delete logical partitions on the server.">Work with configuration data for logical partitions</a></div>
</div>
<div class="relconcepts"><strong>Related concepts</strong><br />
<div><a href="rzaitloadsource.htm" title="Each logical partition must have one disk unit designated as the load source.">Logical partition concept: load source</a></div>
<div><a href="rzaitrecworkclear.htm" title="You can clear the configuration data for the topics.">Clear partition configuration data for logical partitions</a></div>
<div><a href="rzaitdiskunit.htm" title="Disk units store data. The server can use and reuse this data at any time. It is more permanent than memory, but you can still erase it.">Logical partition concept: disk units</a></div>
</div>
<div class="reltasks"><strong>Related tasks</strong><br />
<div><a href="rzaitmanagparhw.htm" title="Understand the rules on installing hardware to a system with logical partitions.">Install new hardware for logical partitions</a></div>
<div><a href="rzaitpal.htm" title="Use Dedicated Service Tools (DST) or System Service Tools (SST) to find system reference codes for logical partitions.">View the Product Activity Log (PAL) for logical partitions</a></div>
<div><a href="rzaitrecloaddu.htm" title="">Accept a disk unit as load source for a logical partition</a></div>
</div>
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