DiskToVhd generated VHD is not bootable

I had windows 10 laptop, I used disk2VHD to convert disk into VHD. Now I am trying to mount it to virtual box on another machine, but it seems be not booting.

I used windows 10 ISO and through CMD I think non of my partition has property bootdisk = yes.

Please guide, how can I convert this VHD to bootable ?