These two steps work in Fusion 7: 1. Install this fix for High Sierra. https://github.com/norio-nomura/high-sierra-vm-installer-fix 2. Run the following command from the installer /Volume...
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These two steps work in Fusion 7: 1. Install this fix for High Sierra. https://github.com/norio-nomura/high-sierra-vm-installer-fix 2. Run the following command from the installer /Volumes/Image\ Volume/Install\ macOS\ High\ Sierra.app/Contents/Resources/startosinstall --converttoapfs NO --agreetolicense --volume /Volumes/Macintosh\ HD/ I.e., make a new VM, select the installer app, select 10.10 as the OS, play the VM, select language, then in macOS Utilities select Utilities, Terminal.