You use Microsoft System Center Virtual Machine Manager (VMM) 2008 R2 to manage your Hyper-V environment.
Failures occur when you perform offline physical-to-virtual (P2V) conversions by using VMM. You need to ensure that you have the information that is necessary to troubleshoot the problem.
What should you do?

A.
Create the x:Windowsinfsetupapi.dev.log file in Windows PE.

B.
Create the scvmm_winpe.etl file on the root of the source computers boot volume

C.
Create the scvmm_winpe_setupapi.log file on the root of the source computers boot volume

D.
Create the scvmm_enable_winpe_tracing.txt file on the root of the source computers boot volume

Explanation:
Offline P2V
Cause: Cannot troubleshoot offline P2V.
Resolution strategy: To enable tracing on the source computer during an offline P2V, create a file named scvmm_enable_winpe_tracing.txt and save it to the root of the source computer’s boot volume. This file does not need to contain any data or information. A trace file named scvmm_winpe.etl will be created and saved on the Source system.

Source: http://technet.microsoft.com/en-us/library/bb963740.aspx