Tag Archives: Hyper-V

Want to update Hyper-V to RTM?

Here is what to do if you use Hyper-V RC0 or RC1 and want to update to Hyper-V RTM. I did this recently with my server.

  1. Apply the snapshot you want to take with you to RTM
  2. Start the virtual machine with this snapshot applied
  3. Shutdown your virtual machine
  4. Delete all Snapshots
  5. Wait for the merge to complete
  6. Uninstall the Hyper-V role with the Server Manager
  7. Logon to the server
  8. Wait for the Configuration Wizard to complete (it starts automatically)
  9. Apply the update details.aspx-FamilyId=F3AB3D4B-63C8-4424-A738-BADED34D24ED&displaylang=en
  10. Restart the server
  11. Logon to the server
  12. Add the Hyper-V role with the Server Manager
  13. Restart the server
  14. Wait for the Configuration Wizard to complete (it starts automatically)
  15. Your virtual machines should be there after the update
  16. Reconnect your virtual machines to the virtual network
  17. Start your virtual machines
  18. Insert the Integration Services Setup Disk and update the Integration Services
  19. Restart the virtual machine


By the way: I did not need to reactivate my virtual machines.

Hyper-V is RTM!

You can download the update (final release) here: http://www.microsoft.com/downloads/details.aspx?FamilyId=F3AB3D4B-63C8-4424-A738-BADED34D24ED&displaylang=en

As usually, saved states and with that snapshots cannot be updated to the final release: http://support.microsoft.com/kb/950050/en-us/

I will update my Windows Server 2008 and give you some details about the process very soon.

Hyper-V RC1 available

I just heard from a colleague that Hyper-V RC1 is available for download.

You can get it here:
Windows Server 2008 x64 Hyper-V RC1 Update – KB950049
Windows Server 2008 x86 Hyper-V RC1 Update – KB950049

The saved states made with Hyper-V RC0 do not work with RC1. The snapshots contain saved states, so they won’t work, too.

I will install the RC1 on my test notebook and share the experiences very soon.

See the Team Blog, too: http://blogs.technet.com/virtualization/archive/2008/05/20/hyper-v-rc1-release-available-on-microsoft-download-center.aspx

Want to migrate your Virtual Server VHDs to Hyper-V?

Okay, you have used Virtual Server for your virtual machines. Now you have Hyper-V and naturally you do not want to reinstall every machine from scratch.
Here is how you can migrate your old VHDs to Hyper-V:

1. Be sure that you backup your virtual hard disk files (VHDs)
2. Uninstall the Microsoft Virtual Machine Additions
3. If you have no Virtual Server environment to deinstall the Virtual Machine Additions, you can install Virtual Server on Windows Server 2008. Here is what you need:
(If you have uninstalled the Microsoft Virtual Machine Additions, you can continue with step 10)

  • Install IIS with the Server Manager and add the required Features
  • Add CGI, Windows Authentication, IIS 6 Metabase Compatibility

4. Install Virtual Server 2005 R2 with SP1:
VS-1 VS-2 VS-3
VS-4 VS-5 VS-6

5. Because the Hypervisor of Windows Server 2008 makes the emulated drivers of Virtual Server virtual machines very slow, you should disable the Hypervisor as long as you want to use Virtual Server. This is not just a setting or driver, you have to boot Windows Server 2008 without the Hypervisor. You have to create a second boot entry:

bcdedit /copy {current} /d “Microsoft Windows Server 2008 – for Virtual Server”
bcdedit /set {Identifier} hypervisorlaunchtype off

The first command copies the current boot configuration to a new one called “Microsoft Windows Server 2008 – for Virtual Server”:

The second command turns the Hypervisor for the new boot entry off:

6. Now you have to restart your server, choose the new boot entry to boot it without the Hypervisor.

7. Okay, now as you are back we can configure the new virtual machine wit the old VHD in Virtual Server:

  • Open your browser and go to http://localhost:1024 to open the Virtual Server configuration site.
  • Click on Virtual Machines – Create:
  • Select a name for the new virtual machine, chose the amount of RAM, enter the path to the VHD file you want to migrate to Hyper-V and click on CREATE:
  • Turn the new virtual machine on:


6. Turn the Virtual Machine Remote Control (VMRC) Server on:
VM-5 VM-6

7. Connect to the the running virtual machine with the Virtual Machine Remote Control Client:

8. Deinstall the Microsoft Virtual Machine Additions and restart the virtual machine:
VM-7 VM-8

9. After the virtual machine is rebooted, you can shut it down and restart Windows Server 2008 with the Hypervisor.

(You can continue here from step 2 when you have uninstalled the Microsoft Virtual Machine Additions)

10. Install Hyper-V, as mentioned in one of my earlier posts.

11. Create a new virtual machine in Hyper-V:
Hyper-V-1 Hyper-V-2 Hyper-V-3
Hyper-V-4 Hyper-V-5

12. Start the new Hyper-V virtual machine.

13. Perhaps you have to activate Windows, because the Hardware has changed due to the Hypervisor:

14. Insert the Services Setup Integration Disk (If your virtual machine is Windows Server 2008 install Hyper-V RC0 or newer in it):

15. Update the Hardware Abstraction Layer:

16. After the HAL update and a reboot the device drivers are installed:

17. Reboot the Virtual Machine:


18. You have to configure the TCP/IP settings. This could be the reason why a migrated domain controller can take a very long time (15 minutes and more) to boot:

That was it, have fun with your migrated machines!

Want to use Hyper-V? (Update)

Everyone is using Hyper-V  for testing purposes and you want it, too? Read along!

Hyper-V, the new virtualization technique from Microsoft is a built-in component of Windows Server 2008 (not in Web and Itanium Edition, see http://www.microsoft.com/windowsserver2008/en/us/compare-features.aspx). So you cannot just install a program like Virtual PC or Virtual Server, you have to install Windows Server 2008 on a computer which supports Hyper-V.

There are two main hardware requirements for Hyper-V:
1. Processor with built-in virtual machine support (Intel VT, AMD-V)
2. Data Execution Prevention (DEP)

Just take a look into your BIOS if there is any virtualization setting. You have to enable it. Most recent systems have this feature, even notebooks.

Okay, you have the proper hardware and you want to dive into Hyper-V, so let’s start:
I assume that you have installed Windows Server 2008 already and therefore I will start with the installation of Hyper-V. At the moment, Hyper-V is RC0 (Release Candidate 0). It is not final yet and it is not supported by Microsoft at this time. But do not worry, a lot of people have made a very good experience with it, including me. You have to download and install the RC0 version of Hyper-V, because the version that is shipped with Windows Server 2008 is just a beta and you should not use that.
You can find the RC0 here:

Update: In the meanwhile, Hyper-V RC1 was released:
Windows Server 2008 x64 Hyper-V RC1 Update – KB950049
Windows Server 2008 x86 Hyper-V RC1 Update – KB950049

After the installation of the RC0, you can add the Hyper-V Role with the Server Manager:


(on my PC the role was already installed)

After a reboot, you are ready to start.

The next steps, creation, migration and using virtual machines are covered in later posts.