Finally, head to Storage in the side pane and choose macOS 10.12 Sierra.vmdk under Attributes, set the Hard Diskto SATA Port 0.Now, navigate to Display and drag the slider in front of Video memory to 128 MB.Now click on the Motherboard tab and unselect Floppy and make sure that IHC9 is selected in dropdown.Here you will find three tabs click on the Drag slider in front of processor to 2 and make sure that Enable PAE/NX is enabled. Now click on the settings icon given at the top of the virtual box.Choose “Use an existing virtual hard disk file” and click on the folder icon to choose the file on desktop from downloaded OS X Sierra to install Mac OS on VirtualBox. After making these entries click on Next.
