Close the Settings window by clicking OK.
Select your Windows 10 ISO file and click Open.Click the small disk icon and click the “Choose a disk file…” option.Go to the Storage tab and select the empty optical drive.Select the newly created virtual machine and click Settings.Select the maximum size of the virtual hard disk (we recommend at least 64 GB) and click Create.Dynamic disks take less storage space, but they are slower than fixed disks. Decide if you want to create a dynamically allocated or fixed virtual hard disk and click Continue.When asked to select the hard disk file type, simply click Continue.Choose the “Create a virtual hard disk now” option and click Create.Select the amount of memory you want to allocate to the virtual machine (Windows 10 requires at least 1 GB for 32-bit or 2 GB for 64-bit).Choose a descriptive name of the virtual machine and select Windows 10 as the version.Launch VirtualBox and click the New button in the top-left corner.
Follow the instructions to set up drivers and everything else necessary to dual boot Windows on a Mac computer.