Parts 1Downloading the Things You Will Need

7
Check the radio option next to "VHD (Virtual Hard Disk)." It's the second option below "Virtual Hard Disk" to the left.

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8
Click Create. It's in the lower-right corner. This creates a new virtual hard disk.
Part3
Setting the Virtual Machine Settings

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1
Select the macOS virtual machine. Simply click the macOS virtual machine you just created in the list of virtual machines to select it.

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2
Click Settings. It's the yellow icon that resembles a gear. This allows you to tweak the virtual machine settings.

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3
Click System and uncheck "Floppy." "System" is in the menu panel to the left. Click this option and then click the checkbox next to "Floppy" in the "Boot order" box. This ensures that the virtual machine will not try to boot from a floppy disk.

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4
Ensure "ICH9" is selected next to "Chipset." This drop-down menu is below the "Boot order" box. If it does not read "ICH9" by default, click the drop-down menu and select "ICH9" as the chipset.

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5
Click the Processor tab and ensure "Enable PAE/NX" is checked. The Processor tab is at the top. Click this tab and then ensure the checkbox next to "Enable PAE/NX" is checked. You need to select this option if you are going to be installing a 32-bit system, or if you need more than 4 GB of memory to run the operating system installed in VirtualBox.

• 
  You do not need to enable "Nested VT-x/AMD-V" unless you plan on running another virtual machine from within the macOS virtual machine.[4]
  
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