Friday, August 31, 2012

Windows Phone 8 inside VMWare

    More than a month ago some Microsoft guy in Asia made a terrible mistake and the LKG25 of Windows Phone 8 SDK leaked to the web. As I am not one of the lucky people that are the development program (as Mary Jo Foley suspected in a tweet and I believe it is true) I was more than happy when I got my hands onto the leaked version. At start I wanted to start blogging about the news that Windows Phone 8 will bring, but then I decided that it wouldn't be fair so I will wait until the official SDK. This post is not intended as a spoiler of any feature from WP8, but more like a proof of concept.
    I am sure many of you read on twitter that the new emulator is a virtual x86 machine and it comes with the virtual hard drive (.vhd file) divided on the screen resolutions.
    The idea came to me today while I was installing a clean virtual machine for development. Till now developing in a virtual machine for Windows Phone and debugging on the emulator with a decent speed/quality was impossible as you would have a virtual machines inside a virtual machine that degrades the performance exponentially. So what if you could have the development environment inside a virtual machine and then the emulator on another virtual machine that runs side by side and communicate on TCP/IP. In this case the performance of the emulator would be good (as it is not a vm inside a vm) and also the speed of the development environment would be acceptable. The virtual machine for the emulator would need 512MB or a maximum of 1GB.
     So the first thing I did is to install a trial version of VMWare Workstation 9 (should work with VMWare Fusion and also Parallels/VirtualBox). Then I have used WinIMAGE to convert the Flash.vhd file to Flash.vmdk which is the format that VMWare uses and created a virtual machine where I've attached the newly created vmdk.

     The good news is that the virtual machine works in VMWare right from the start. Not everything works (more decent is to say that some things work :) ) but hey it runs and I did nothing. The networking is not working but the most annoying part is the mouse pointer which is invisible in the virtual machine so I am blind pressing the mouse and at some point I am able to hit some buttons as you can see in the video :

More important than what this video shows (which is almost nothing) is what it could mean (even if I doubt we will see any of these in the near feature)

  • Theoretically developing for Windows Phone 8 on Windows 7 should be possible and not so hard to achieve (the partition where I installed Vmware Workstation runs Windows 7)

  • With some collaboration between Microsoft and VMWare/Parallels it would be possible to develop on a virtual machine and debug/deploy on the emulator which is another virtual machine. This would be great for Mac users but also for everyone (I might say like me) that likes to keep his development environments clean and separated from each other (I have a VM with VS2008 and Compact Framework, soon VS2010 will pass in a virtual machine too, I don't want to install VS2010 on my Windows 8 partition etc.)

  • The emulator is an x86 virtual machine so it shouldn't be so hard to achieve plug-gable hardware into the emulator (like connect the webcam to the emulator camera, storage card to an USB key or shared folder, NFC hardware - here I might be mistaking but should be a serial connection after all). It would give us a better development environment.

P.S. Seeing that it is a virtual machine I beg the team which is in charge of the emulator to SAVE the emulator/virtual machine state between resets. It is really annoying to always start from 0 and none of the other major mobile platforms has this limitation.

Till next time NAMASTE to you my reader.


  1. Thanks for your post. It's given me a direction to go for WP8 dev on Win8 running in VMWare Fusion on a Mac.

    I have a couple of questions though:

    Are you running VS 2012 and the WP8 SDK in Win7 or Win8 VMWare virtual server?

    If you're running under Win8 which version of WinImage did you use? It looks like only Win7 is supported.

    Thanks, -Scott ( @recklesscoder )

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  3. Everybody find a solution for the mouse pointer ?

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  5. the solution to mouse pointer issues is to use a touch screen ;)

  6. HI
    thank youn, I did it also directly on virtual box because it support .vhd disks :)
    i have chosen windows (other windows) as OS type and the Flash.vhd as virtual hard drive
    & it works just llike u did