You'll want to create a vhd of your existing windows install (disk2vhd). I would stick this on an external (usb or the like) and test this image (virtualbox, etc.) before continuing. Then go through the standard process of installing Linux. You could also dual boot if you don't want to just blow away a machine and use virtualbox to boot the Win 10 image (raw disk access) from the Linux side.
You'll want to create a vhd of your existing windows install (disk2vhd). I would stick this on an external (usb or the like) and test this image (virtualbox, etc.) before continuing. Then go through the standard process of installing Linux. You could also dual boot if you don't want to just blow away a machine and use virtualbox to boot the Win 10 image (raw disk access) from the Linux side.