V2V conversion using VMware Converter fails at 97% with error: Unable to find the system volume, reconfiguration is not possible

I tried to move a Windows 7 VM from ESXi to vSphere but as it neared completion the Converter stated that it had failed.

After a little search I found this from VMware


It described a long process of going through an OS repair mode on the original source machine and using BCDEDIT to reset the partition settings used during the boot process.

I didn’t go through the repair process but instead booted the source VM to run the three BCDEDIT commands that it lists. I was only getting success with the first one:

bcdedit /set {bootmgr} device partition=C:

and an error regarding syntax with the other two commands:

bcdedit /set {default} device partition=C:

bcdedit /set {default} osdevice partition=C:

In the end and out of curiosity I checked the destination VM because even though it had errorred, it had still completed the conversion and was listed as a powered off VM in the Virtual Infrastructure.

Strangely it powered on and worked as normal! I can only assume that the error was some kind of registration problem as the VM functions correctly and its’ partitions are listed correctly.


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