

If after installation and at the first start you will see the window “About activation …”, you should do the following: Additional disk space for virtual machines (we recommend using a solid-state drive to improve performance).850 MB of disk space on the boot volume (Macintosh HD) for installing Parallels Desktop.macOS High Sierra 10.13, macOS Sierra 10.12, OS X El Capitan 10.11.5, OS X Yosemite 10.10.5.
