In a moment or two you’ll be in the Windows 10 installer, select your language and click “Next.”.Since there is no drive or OS installed yet, you will be asked to choose a virtual optical disk, click on the Folder icon and choose the Windows 10 ISO, then click “Start.”.Back at the primary VirtualBox screen, choose “Start” to boot the new Windows 10 volume.Select to create a new virtual hard drive, then choose Continue again.Name the new virtual machine “Windows 10 VM” (or something equally obvious), select “Microsoft Windows” as the type and choose “Windows 10” as the version, then choose Continue.Open VirtualBox and click on the “New” button to build a new virtual machine.Open the disk image dmg file and double-click on the uninstall icon shown.Save the DMG file, which is needed to uninstall Virtual Box.After installation, you can find an Oracle VM VirtualBox icon in the “Applications” folder in the Finder.This will start the installer, which enables you to select where to install Oracle VM VirtualBox.A window opens, prompting you to double-click on the VirtualBox.pkg installer file dis-played in that window.Double-click on the DMG file, to mount the contents.Download VirtualBox installation DMG from, select OS X hosts.