Here is the solution... how to undo partition back.
https://winhowto.wordpress.com/2012/11/05/undo-diskpart-clean-recover-lost-disk-or-partition-in-windows-7/#comments
https://winhowto.wordpress.com/2012/11/05/undo-diskpart-clean-recover-lost-disk-or-partition-in-windows-7/#comments