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<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE topic PUBLIC "-//OASIS//DTD DITA Topic//EN" "topic.dtd">
<topic xml:lang="en-us" id="changeacpicust">
<title>Configuring Custom ACPI Tables</title>
<body>
<p>You can configure <ph conkeyref="vbox-conkeyref-phrases/product-name"/> to present up to four custom ACPI tables
to the guest. Use a command such as the following to configure custom ACPI tables. Note that
<codeph>CustomTable1</codeph>, <codeph>CustomTable2</codeph>, and <codeph>CustomTable3</codeph> are available in
addition to <codeph>CustomTable0</codeph>. </p>
<pre xml:space="preserve">$ VBoxManage setextradata <varname>VM-name</varname> \
"VBoxInternal/Devices/acpi/0/Config/CustomTable0" "/<varname>path-to-table</varname>.bin"</pre>
<p>Configuring custom ACPI tables can for example avoid the need for asking for a new product key on Windows Vista,
Windows 7, Windows 8 and later guests. On Linux hosts, one of the system's ACPI tables can be read from
<filepath>/sys/firmware/acpi/tables/</filepath>. </p>
</body>
</topic>
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