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Microsoft Virtual Machine Converter fails with error: Heads values must be between 0 and 254

Symptoms
Attempting to perform a virtual machine conversion using the Microsoft Virtual Machine Converter (MVMC) solution accelerator returns the following status at completion :

Microsoft Virtual Machine Converter encountered an error while attempting to convert the virtual machine.

Details:
Heads values must be between 0 and 254.
Parameter name: value
Actual value was 255.
Cause
This can occur if the virtual machine being converted has a GUID Partition Table (GPT) disk attached. MVMC supports converting virtual machines that have Master Boot Record (MBR) partitioned disks attached but not virtual machines that have GPT disks attached.
Resolution
This is by design. MVMC does not currently support GPT disks.
More information
Sample output from the log file:

258 11/02/2012 05:59:05 +01:00 [6] Progress message: 'Converting source virtual machine 'VM01''.
259 11/02/2012 05:59:21 +01:00  [6]  System.ArgumentOutOfRangeException: Heads values must be between 0 and 254.
260 Parameter name: value
261 Actual value was 255.
262    at Microsoft.Accelerators.Mvmc.Engine.Drive.MasterBootRecord.ChsTupleMemoryMap.set_Heads(Byte value)
263    at Microsoft.Accelerators.Mvmc.Engine.Drive.MasterBootRecord.ChsTupleMemoryMap.Refresh()
264    at Microsoft.Accelerators.Mvmc.Engine.IO.MemoryMap.CreateImpl(Type type, IAddressableRange addressableRange, Boolean refresh)
265    at Microsoft.Accelerators.Mvmc.Engine.IO.MemoryMap.ReadMemoryMap(PropertyInfo propertyInfo, WriteData writeData)
266    at Microsoft.Accelerators.Mvmc.Engine.IO.MemoryMap.HydrateValue(PropertyInfo propertyInfo, WriteData writeData)
267    at Microsoft.Accelerators.Mvmc.Engine.IO.MemoryMap.Refresh()
268    at Microsoft.Accelerators.Mvmc.Engine.IO.MemoryMap.CreateImpl(Type type, IAddressableRange addressableRange, Boolean refresh)
269    at Microsoft.Accelerators.Mvmc.Engine.IO.MemoryMap.ReadMemoryMap(PropertyInfo propertyInfo, WriteData writeData)
270    at Microsoft.Accelerators.Mvmc.Engine.IO.MemoryMap.HydrateValue(PropertyInfo propertyInfo, WriteData writeData)
271    at Microsoft.Accelerators.Mvmc.Engine.IO.MemoryMap.Refresh()
272    at Microsoft.Accelerators.Mvmc.Engine.IO.MemoryMap.Create[T](IAddressableRange addressableRange)
273    at Microsoft.Accelerators.Mvmc.Engine.Utilities.Helpers.UpdateDriveGeometryHelper.VerifyAndFixDriveGeometry(IDrive drive, IAddressableRange mbrAddressableRange)
274    at Microsoft.Accelerators.Mvmc.Engine.Drive.Vhd.FixedVhdDrive.UpdateFrom(IDrive source)
275    at Microsoft.Accelerators.Mvmc.Engine.ServiceLayer.DriveConversionService.ConvertVmdkToVhd(String vmdkDrivePath, String vhdDrivePath, VhdType vhdType)
276    at Microsoft.Accelerators.Mvmc.Engine.ServiceLayer.MachineConversionServiceImplementation.Phases.ConvertDisksService.ConvertDisksImpl(ISubject`1 conversionStepSubject, IDirectoryInfo2 vmdkDirectory, IDirectoryInfo2 vhdDirectory, Boolean dynamicDisks)
277    at Microsoft.Accelerators.Mvmc.Engine.ServiceLayer.MachineConversionServiceImplementation.Phases.ConvertDisksService.ConvertDisks(ISubject`1 conversionStepSubject, IDirectoryInfo2 vmdkDirectory, IDirectoryInfo2 vhdDirectory, IMachineConfiguration machineConfiguration, IOSInfo guestOS, String guestDllDirectory, Boolean dynamicDisks)
278    at Microsoft.Accelerators.Mvmc.Engine.ServiceLayer.MachineConversionServiceImplementation.Phases.ConvertDisksService.ConvertDisksToFixedVhd(ISubject`1 conversionStepSubject, IDirectoryInfo2 vmdkDirectory, IDirectoryInfo2 vhdDirectory, IMachineConfiguration machineConfiguration, IOSInfo guestOS, String guestDllDirectory)
279    at Microsoft.Accelerators.Mvmc.Engine.ServiceLayer.MachineConversionService.Convert(IMachineConversionRequest machineConversionRequest, Boolean dynamicDisks)
280 11/02/2012 05:59:21 +01:00 [6] _4127 End - Machine conversion

Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.
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Article ID: 2785521 - Last Review: 12/04/2012 16:33:00 - Revision: 2.0

  • Microsoft Virtual Machine Converter
  • KB2785521
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