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How to Upgrade Windows 8 Consumer Preview VHD Boot to Release Preview

I already went through the procedure to create a Virtual Hard Drive (VHD) with Win8 Consumer Preview as described in the HowToGeek.com article and wanted to replace the VHD contents with the new Release Preview that came out yesterday. If you have the same situation, this will save you several steps.

If you try to upgrade your Consumer Preview, it will tell you that it is not possible since it is on a VHD. Maybe someone will figure out a workaround so your installed programs are not lost. So I figured for now, I'd just blow away the Consumer Preview and use the same VHD to hold the Release Preview.

The steps you save are creating the VHD and adding it to the boot menu. What you want to do are these steps:

  1. Download the ISO for the RP (from here)
  2. Mount the ISO as a drive (I used this)
  3. Attach the old VHD as a drive letter (Computer Mgt->Disk Mgt->Action->Attach VHD)
  4. Format the VHD drive to blow away the old Win8 CP
  5. Start PowerShell in Administrator mode to run the Install-WindowsImage.ps1 script (from here)
  6. Run Install-WindowsImage as shown below
  7. Assuming your boot menu Win8 entry is still in place, reboot into your new Win8 RP.

To run Install-WindowsImage enter this at the PowerShell prompt. This assumes you have CD'd into the folder with the script:

PS> .\Install-WindowsImage.ps1 –WIM J:\Sources\Install.wim –Apply –Index 1 –Destination I:\


Also, it assumes J: is the mounted ISO and I: is the attached VHD. The script will make the VHD bootable and copy the necessary folders and files from the ISO to the VHD. If you need to add a new boot menu item type bcdboot.exe I:\Windows where I: is your VHD. 

PowerShell running Install-WindowsImage

The Install-WindowsImage took about 4 minutes where the ISO and VHD where on an SSD and 32 minutes when both were on the same hard drive partition.

To reuse the same boot menu, the VHD file name and location need to be the same (use command line bcdedit with no parameters to display the boot menu details).
 
At this point, the VHD has an installed version of Windows 8 Release Preview that can be booted. The initial boot will go through some configuration and setup and you're done. The product key is: DNJXJ-7XBW8-2378T-X22TX-BKG7J or TK8TP-9JN6P-7X7WW-RFFTV-B7QPF .

The howtogeek.com article above has all the details, screenshots and more if you need additional information about this procedure.

Once running, you can install Windows Media Center using the info at this blog.

Print | posted on Friday, June 1, 2012 1:28 PM |

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# re: How to Upgrade Windows 8 Consumer Preview VHD Boot to Release Preview

kalo
11/4/2012 8:28 AM | maria

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