Make a backupīefore installing any upgrade, it’s a good idea to back up your Mac. If your Mac isn't compatible with macOS Sierra, the installer will let you know. To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . MacBook Pro introduced in mid 2010 or later MacBook Air introduced in late 2010 or later Your Mac also needs at least 2GB of memory and 8.8GB of available storage space. You can upgrade to macOS Sierra from OS X Lion or later on any of the following Mac models. Dmg File Won't Open On Mac High Sierra Download Drop into the Applications folder on that machine & launch. The copy can then be used on any other machine. BTW it's not a.dmg, but an.app file Copy it to a safe place after install it will be auto-deleted from Applications. The Installer is in /Applications/ and has the name Install macOS Sierra.
This method can not only be used with the High Sierra but with all other macOS Mojave and Catalina. Simply use VMware Player to run macOS High Sierra on Windows pc. Windows users do not need to buy new Macs to enjoy all the features this operating system has to offer.
