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Fatal Error Solutions

An initialization failure occurred while...

STOP: 0x0000012F


The volume that contains the Virtual Hard Disk (VHD) does not have enough free space to fit the VHD.

This is a fatal Windows error, typically called a Stop message, Bug Check, or more commonly the Blue Screen of Death (BSoD). The system is in a forced reboot state. Any unsaved work is likely lost.

  Sample Screen  

A problem has been detected and Windows has been shut down to prevent damage to your computer.

An initialization failure occurred while attempting to boot from a VHD.

Technical Information:

*** STOP: 0x0000012F

Beginning dump of physical memory
Physical memory dump complete.

Contact your system administrator or technical support group for further

Text may appear differently depending on where the error occurs.
Additional technical information (hex values) specific to a machine are not shown.
  Key Facts  
Full Title
  An initialization failure occurred while attempting to boot from a VHD. 

Stop Code


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  7, 8

  Microsoft Corporation
  Solutions and Fixes  
Resize Virtual Disk Smaller
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  1. Boot into your parent operating system and attach the VHD as a partition using either DISKPART or the Disk Management GUI.  Use your own drive-path-vhd filename in the next step:
    • select vdisk file="c:VirtualDisksWindows_Beta.vhd"
    • attach vdisk
  2. Shrink the VHD size using the Disk Management GUI. If your original maximum VHD size was 500 GB and you only have 200 GB free, set it to leave some free space, such as 20 GB free. In this example, it would mean a new size of 180 GB.
  3. Use the free VHDResizer tool to trim off the excess "maximum capacity" of your newly shrunken VHD. You can get VHDResizer from VMToolkit to accomplish this. Set the maximum size to the same size as your new partition size.
  4. VHDResizer will require you to specify a new name for the resized VHD. After VHDResized completes, rename the old VHD to "file_old.vhd" and the new VHD to the same as your old file to ensure the boot manager picks up the VHD.
  5. Restart and the problem should disappear.
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  FaultWire Staff
Posted: 2-Sep-2009

Also see our list of common Fatal Error Solutions.

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    While BSoD fatal stop errors are identified by Microsoft Windows, they are often caused by non-Microsoft applications, drivers and hardware issues.  
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