| 1 | <?xml version='1.0' encoding='UTF-8'?>
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| 2 | <!DOCTYPE topic PUBLIC "-//OASIS//DTD DITA Topic//EN" "topic.dtd">
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| 3 | <topic xml:lang="en-us" id="intro-64bitguests">
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| 4 | <title>64-bit Guests</title>
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| 5 |
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| 6 | <body>
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| 7 | <note>
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| 8 | <p>Be sure to enable <b outputclass="bold">I/O APIC</b> for virtual machines that you intend to use in 64-bit
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| 9 | mode. This is especially true for 64-bit Windows VMs. See <xref
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| 10 | href="settings-motherboard.dita#settings-motherboard"/>. For 64-bit Windows guests, ensure that the VM uses
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| 11 | the <b outputclass="bold">Intel networking device</b> because there is no 64-bit driver support for the AMD
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| 12 | PCNet card. See <xref href="nichardware.dita#nichardware"/>. </p>
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| 13 | </note>
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| 14 | <p>If you use the <b outputclass="bold">Create VM</b> wizard of <ph conkeyref="vbox-conkeyref-phrases/vbox-mgr"/>,
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| 15 | <ph conkeyref="vbox-conkeyref-phrases/product-name"/> automatically uses the correct settings for each selected
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| 16 | 64-bit OS type. See <xref href="create-vm-wizard.dita#create-vm-wizard"/>. </p>
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| 17 | </body>
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| 18 |
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| 19 | </topic>
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