Known Issue - FirstBootFailure. Windows system drive is not C:


FirstBootFailure: This import request failed because the Windows instance failed to boot and establish network connectivity.

When Windows system drive is not C:


Our Windows installation should be located on drive C:. 

Amazon EC2 fails to accept images of Windows installed on drive other than C:.


Change system drive letter to C via Windows Disk Management or via registry.


See Microsoft KB on how to change the system drive letter via registry