Once the virtual machine with MacOS Ventura started, follow the on-screen instructions to complete the install for Ventura on the virtual machine. Start the virtual machine by clicking on the 'Start' button.This will start the installation process in a window on your desktop. Click 'OK' to save the settings and exit. The easiest way is to use the Download OSX button in the Install menu of VirtualBox.Select 'Choose Virtual Optical Disk File' and browse to the macOS installation files you extracted earlier.Under 'Storage', click on the 'Empty' CD/DVD icon and then click on the 'Add' icon.Once the virtual machine is created, select it from the main menu and click 'Settings'.It is recommended to choose at least 30GB.

Choose the size of the virtual hard disk.

Select 'Dynamically allocated' and click 'Next'.

It is recommended to choose the default option, which is VDI.

Select the hard disk file type and click 'Next'.

Select 'Create a virtual hard disk now' and click 'Create'.

It is recommended to allocate at least 4GB of RAM.

Set the amount of RAM you want to allocate to the virtual machine.

Give the virtual machine a name, select 'Mac OS X' as the type, and select the version of macOS you want to install (in this case, for example, 'Mac OS X (64-bit)').

Open VirtualBox and click on 'New' to create a new virtual machine.

Extract the macOS installation files from the downloaded file and save them in a convenient location.

Download the macOS installation file (in this case, for example, macOS Ventura) from the App Store or any other trusted source.

Download and install the latest version of VirtualBox for Windows from the official website.

Below is step-by-step guide on how to install macos Ventura operating system on windows 10 machines using the virtualbox.

Install macos on virtualbox windows 10