With the Hyper-V role available on Windows Server 2012 R2, it's possible to create Generation 1 and 2 virtual machines.
In our previous tutorial "Hyper-V 3.0 (WS 2012 R2) - Install Hyper-V and create your first virtual machine", we created a virtual machine of generation 1 with Windows 7 x64.
In this new tutorial, we will create a virtual machine of generation 2 with Windows 8.1 Pro x64 to show you the differences with the previous generation.
As you can see on the Microsoft website, not all versions of Windows are supported by Generation 2.
But, to be brief, Generation 2 is compatible with the 64-bit architecture from Windows 8.
By creating a Generation 2 virtual machine, you will be able to use :
However, you will lose access to the floppy disk drive (which is no longer used today) and the IDE controller which is replaced by a SCSI controller only.
Let's create a new virtual machine.
The New Virtual Machine Wizard appears.
Provide a name for this virtual machine.
In our case : Win 8.1 Pro x64.
Choose "Generation 2".
Specify the amount of RAM that you want to allocate to this virtual machine.
Select the switch to which you want to connect this virtual machine.
For this tutorial, we will create a virtual hard disk of 80 GB.
We select the iso file of Windows 8.1 Pro x64.
A summary is displayed.
Start your virtual machine.
If the message "Boot Failed. EFI SCSI Device." is displayed, the operating system that you want to install in this virtual machine is not compatible with EFI or is not supported by Generation 2 of Hyper-V virtual machines.
If all goes well, the virtual machine will boot to the Windows 8.1 Pro installation DVD.
Press a key if he asks you.
The Windows 8.1 Pro setup wizard appears.
For the installation of Windows, refer if necessary to our tutorial : Windows 8 / 8.1 - Formatting and reinstalling
Once Windows is installed, install the Hyper-V integration services as needed.
To do this, go to : Action -> Insert Integration Services Setup Disk.
As previously explained, generation 2 virtual machines use an EFI system instead of the old BIOS (Legacy BIOS).
In the settings of your virtual machine, you will find a "Firmware" option with :
Note that the secure boot is enabled by default for security, but it can be manually disabled when the virtual machine is shut down.
If you go into disk management in the guest OS, you will see that 2 hidden partitions were automatically created by the Windows 8.1 Pro installer :
Right-click "Properties" on disk 0 (where you installed Windows 8.1 Pro).
If you have already installed Windows in EFI mode, you probably know that the hard disk where Windows is installed will automatically be in GPT.
Unlike a typical Windows installation where the type of partitions was : MBR.
For more information about the differences between Generation 1 and Generation 2, see "Should I create a generation 1 or 2 virtual machine in Hyper-V?" from Microsoft.
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