Windows 8的Hyper-V比服务器2008的Hyper-V是Hyper-V（V3）的更新版本。不建议将从Windows 8创建的VM导入到Server2008。但是从Server 2008到Windows 8则没有问题。如果必须从Windows 8迁移到Server 2008 Hyper-V，请确保不要使用.vhdx文件。

转换.VHD和.VHDX：

1. 打开Hyper-V

2. 右键单击要转换的虚拟机，然后选择设置：

   

3. 选择硬盘IDE（通常为IDE 0），然后选择“编辑”：

   

4. 选择转换，然后单击下一步

5. 选择您想要转换为的VHD的类型，然后选择“下一步”。

6. 选择磁盘类型：（固定大小，动态扩展），然后单击下一步

7. 选择位置（注意：这并非默认为上次保存的位置），然后单击“下一步”。

8. 选择完成

The use of exporting and importing is the preferred way of migrating VM's between Machines (Server 2008 to Windows 8 in your case).

To do this follow these steps:

Exporting:

1. Open Hyper-V Terminal

2. Right click on the VM that you want to export and select "Export" (make sure the machine is turned off):

   

3. Browse to the folder that you wish to save the VM:

   

4. Then Select Export.

Hyper-V will then in the background export the VM. This may take a few minutes or even quite a bit of time, depending on the type and size of the VM.

Importing:

1. Open Hyper-V Terminal

2. On the right side, under the "Action" panel select "Import Virtual Machine...":

   

3. Select Next

4. Browse to the folder where you saved the VM

5. Select the Exported VM:

   

6. Select whether you want to Register, Restore, or Copy the VM

   • Register: If you have a virtual machine were you have already put all of the virtual machine files exactly where you want them, and you just need Hyper-V to start using the virtual machine where it is – this is the option you want to choose.
   • Restore: If your virtual machine files are stored on a file share / removable drive / etc… and you want Hyper-V to move the files to the appropriate location for you, and then register the virtual machine – this is the option for you.
   • Copy: If you have a set of virtual machine files that you want to import multiple times (e.g. you are using them as a template for new virtual machines) this is what you want to choose. This will copy the files to an appropriate location, give the virtual machine a new unique ID, and then register the virtual machine.

7. 选择完成

这会将VM导入Hyper-V。同样，这可能需要一些时间，具体取决于VM的类型/大小以及上面选择的选项。