The new WP8 emulator is a Hyper-V machine and will only run on non virtualised hosts. So my Mac OSX Parallels 8 dev setup with Windows 8 and Visual Studio 2012 installed in a virtual machine will allow me to install the Windows Phone 8 SDK and all the tools but the phone emulator will not start.
Symptoms
Nested Hyper-V support in Parallels Desktop Virtual Machines
Information
Parallels Desktop provides nested virtualization support (VT-X technology) that allows you to run Hyper-V virtual machines inside Windows 8, 10 and Windows Server 2012 virtual machines.
Note: Running a virtual machine within a virtual machine may slightly slow down the hosting virtual machine performance.
Resolution
Parallels For Mac Emulators
NOTE:Bear in mind that the virtual machine must be shutdown in order to enable Nested Virtualization support.
To enable Hyper-V support in Parallels Desktop Pro and Business Edition:
Go to Actions menu > Configure > Hardware > CPU&Memory. Expand 'Advanced Settings' and tick Enable Nested Virtualization checkbox.
Parallels Desktop 13 and 14:
Parallels Desktop 11 and 12:
- Parallels Desktop 8, 9 and 10:
This option located in Options > Optimization
Parallels For Mac Free Download
If you want to create or test applications for Windows Phone, first configure Windows to run Windows Phone emulator.
Warning: Do not use Hyper-V virtual machines in a production environment. Microsoft® doesn't support nesting Hyper-V, and so such virtual machines may be unstable.