Once you have a copy of the High Sierra installer, an iso file must be prepared to install it in the virtual machine. In the menu bar, select Tools > Download macOS High Sierra…Īfter a few minutes, you should have a copy of the High Sierra installer. Once the tool is downloaded, open it and use its built-in downloading feature. I downloaded a copy through this macOS High Sierra Patcher Tool for Unsupported Macs. High Sierra can still be downloaded from third-party websites. However, High Sierra is no longer available for download from the Apple App Store. Downloading High SierraĪt the time of this writing, High Sierra was the most recent version of Mac OS X that could be installed in a VirtualBox virtual machine. I used a Mac in the first two steps and completed the last two steps on the target Windows machine. Prepare an ISO with the High Sierra installer.There are three major steps to install OS X High Sierra in VirtualBox in a Windows 10 host:
