Disk2VHD is a great tool to convert physical to virtual machine in vhd format. Recently they have released v2.0 to support vhdx as well.
Just download the utilities and run on source machine. When executed, it will create one virtual disk (vhd or vhdx format) on each disk.
With “Uncheck use vhdx” option. It will convert the disk to vhd format
With “Use VHDX option” checked. It will convert into vhdx format
To download, please visit Windows SysInternal:- http://technet.microsoft.com/en-us/sysinternals/ee656415