64 bit Virtual Machines on Windows 2003 x64 Enterprise and Virtual Server R2?

Posted on 2007-08-10
Last Modified: 2013-11-29
Hi, can you please help me figure this out?

I am working with a freshly installed Windows 2003 SP2 R2 x64 machine, and I'd like to be able to create 64bit Virtual Machines on it.  

I have installed Virtual Server 2005 R2, and so far I only am seeing it want to create 32 bit VMs.

How can I create 64Bit VMs?  Ideally, I would like to be able to install Windows 2003 x64 Enterprise on the VMs.  

Please let me know.

Question by:FreshyMeshy
    LVL 4

    Expert Comment

    Following link could possibly of some use,

    For issues in release notes,

    Let me know if its of any help.


    Author Comment

    Hi, thanks for the links.  Unfortunately, they do not seem to help.

    I am working with Microsoft Virtual Server 2005 R2, rather than VMWare.

    If there is anything specific in those links, please point them out.


    Author Comment

    LVL 2

    Accepted Solution

    Unfortunately Virtual Server lacks the ability to run a 64 bit OS as the guest operating system. Virtual Server 2005 R2 will take advantage of a 64-bit or multi-cpu/core host, but that's all.


    Q. Does Virtual Server 2005 support 64-bit processors?
    A. Virtual Server 2005 R2 runs on both 32-bit and 64-bit (x64) host operating systems. It supports both AMD64 and Intel IA-32e/EM64T (x64) processors. Note that Virtual Server 2005 R2 does not support Itanium (IA-64) processors. Earlier versions of Virtual Server run on x64-based hardware provided it is running a 32-bit version of a supported host operating system.

    Note that Virtual Server 2005 R2 requires that guest operating systems be 32-bit.
    If you want to run a 64-bit guess you have to go with VMware or wait for the next version of Virtual Server.

    LVL 2

    Expert Comment

    Quick update in case the author comes back. Windows Server 2008 went RTM about two weeks ago. The new version of Virtual Server does support the features he was looking for (64-bit and multiproc guest os). This feature is not yet RTM even though the OS is, however.

    LVL 1

    Expert Comment

    Forced accept.

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