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Running CentOS 5.x on Hyper-V

I’m running Linux in Hyper-V VM’s since the launch of the Windows Server 2008 RTM. But in the beginning it was quite complex to get real performance and support for the network drivers.

But recently with the launch of Windows Server 2008 R2 there are also new Linux Integration Components which also work for Windows Server 2008 RTM. So here is the list of steps to install CentOS with the integration components.

  1. Download the latest CentOS distribution from (I use the x86_64 version).
  2. Create a VM, I suggest:

    >400MB memory
    Add a Legacy Network Adapter (connect to network)
    Add a Network Adapter (connect to network)

  3. Mount the CDROM and install CentOS (I use the minimal setup)
  4. After the installation is done make certain you’re up to date
    yum update
  5. Install the required components for the Linux Integration Components
    yum install gcc make gnupg kernel-devel
  6. Reboot into the latest kernel
  7. Download the Linux Integration Components
  8. Mount the CDROM and copy the contents
    mkdir -p /mnt/cdrom
    mount /dev/cdrom /mnt/cdrom
    cp -rp /mnt/cdrom /opt/linux_ic
    umount /mnt/cdrom
  9. Build the drivers
    cd /opt/linux_ic
    ./ drivers

    If you get the message No kernel-xen-devel or kernel-source package installed. You must install this package before installing the drivers. edit the file and change the following:

    -$kernel = `rpm -q kernel-xen-devel`;
    +$kernel = `rpm -q kernel-devel`;

    If everything went OK you can now see a new nic (network interface controller) called seth0 using ifconfig

  10. You can now remove the Legacy Network Adapter.

Remember, every time you update the kernel you have to run the drivers command.