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<H1>Host and Guest PCs</H1>
         
            <P>When running
            Virtual PC, it is important to distinguish between the PC
            operating system that is running directly on the PC
            hardware, and the PC operating system that is running
            within the context of Virtual PC. </P>
            
         <H2>Host PC</H2>
         
            <P>The host PC is the
            PC on which you installed Virtual PC.</P>
            
            <P>The hardware
            components of the host PC are the physical components
            installed by the PC manufacturer or by a third party.
            These components include the hard disk, CPU, and
            RAM.</P>
            
            <P>The host PC
            operating system is contained on the host PC hard disk,
            and runs directly on the host CPU in combination with the
            host RAM. </P>
            
         <H2>Guest PC</H2>
         
            <P>The guest PC is the
            PC that you created within the context of Virtual PC.</P>
            
            
            <P>The guest PC
            contains no physical hardware components. The virtual
            hardware components for the guest PC are provided through
            Virtual PC, and are specified in the guest <A HREF="../../vpc04/vpc4rtoc.htm"
            >PC settings</A>. The virtual hardware components
            you can specify include the hard disk and RAM. There is
            no setting for the guest CPU, since the guest PC, by
            definition, uses the CPU of the host PC.</P>
            
            <P CLASS=NOTE><B>Note:</B> Virtual PC does not emulate the
            CPU. Programs running on a guest PC pass through Virtual
            PC, and run in native mode on the host CPU. </P>
            
            <P>The guest PC
            operating system is contained on the guest hard disk
            image. The guest hard disk image is a file contained on
            the host PC hard disk. The guest operating system runs
            within the context of Virtual PC. Virtual PC provides the
            guest operating system with access to the host CPU. It
            also provides access to the host RAM, in accordance with
            the <A HREF="../../vpc04/pgs/vpc4Memory.htm"
            >PC Memory Setting</A>.
      

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