In the last step of the virtual machine creation wizard, click the Customize Settings button and configure the installation location of the VM in the window that opens. However, if you want to install Windows 10 from scratch, it would make more sense to create a new virtual disk. If you have the virtual disk of Windows 10 that you have installed before, you can add the virtual disk to the guest machine by using the Add an existing virtual disk option. If you are going to install Microsoft’s current operating system, it is recommended to choose UEFI / UEFI Secure Boot for VM security.
When you decide to install older versions of Windows, you should choose Legacy BIOS for systems that do not support UEFI. Since you will install Windows 10 on the guest machine, select Microsoft Windows / Windows 10 圆4 and click Continue again. You need to select the operating system that you will install on the virtual machine on this screen. To create a more detailed and neat virtual computer, select Create a custom virtual machine and click the Continue button. After opening the Fusion software, you can see different installation methods on its main screen.