Would like to run Windows 10 with ubuntu without deleting ubuntu

[Stuart]

Guys,

Yesterday I got a copy of Windows 10. I am currently running ubuntu 
16.04 LTS on my desktop. would like to install and make both operating 
system bootable. Is there any way of doing so without first deleting 
Ubuntu, installing windows and then reinstalling ubuntu as dual boot? I 
was thinking virtual box or partitioning the drive into a C&D drive, 
leaving ubuntu on the C drive and installing windows on the D drive as  
bootable OS. Will  this work?

Stuart