Not happy with El Capitan in fact I think Mac OS has gone down hill after Snow leopard. I have Parallels Desktop 11 and back to Parallels Desktop 5. If I format and reinstall Snow Leopard (I have disks) will Parallels Desktop 11 still be usable and will Windows 10 run?
Hi BryanD2, Mac OS X Snow Leopard will not meet the system requirements of Parallels Desktop 11, please see this article for more information.