This will start the installation process, without converting to APFS! Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/startosinstall -converttoapfs YES In the VM, download High Sierra from the Mac Store, or follow this URI macappstores:///app/id1246284741 The installer will be in Applications (or copy a previously downloaded Install macOS High Sierra.app to Applications in the VM). See this post for guidance to setup a virtual macOS. So, the easiest method to get a High Sierra VM is to upgrade from Sierra in-place.įirst, you need a running macOS Sierra VM running in Parallels Desktop Lite. Parallels has an automated wizard that creates a macOS Sierra VM with absolutely no hassle. Method 1: Upgrade macOS Sierra VM to High Sierra I couldn't find any info on the Parallel's documentation except that one has to upgrade to Parallels Desktop 13 (paid) instead of Lite (free). However, Parallels does not support APFS, so here's how to disable the conversion and get High Sierra running in a Parallels. I discovered the High Sierra installer converts the VM file system to Apple File System (APFS). However, both a clean install in a Parallels Virtual Machine (VM), nor an in-place update did not work (the High Sierra VM would refuse to boot).
When macOS High Sierra was released around 25 th September, I tried to install it in Parallels Desktop Lite.