

On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. Enterprise administrators, please download from Apple, not a locally hosted software-update server.Įl Capitan downloads as a disk image. Important: To get the correct installer, download from a Mac that is using macOS Sierra 10.12.5 or later, or El Capitan 10.11.6. If the installer opens after downloading, quit it without continuing installation. Installers for each of these macOS versions download directly to your Applications folder as an app named Install macOS Catalina, Install macOS Mojave, or Install macOS High Sierra. MacOS Catalina, macOS Mojave, or macOS High Sierra Download macOSįind the appropriate download link in the upgrade instructions for each macOS version: You don't need a bootable installer to upgrade macOS or reinstall macOS, but it can be useful when you want to install on multiple computers without downloading the installer each time. These advanced steps are primarily for system administrators and others who are familiar with the command line. Step 2: Connect the aforementioned USB flash drive to your Mac, and then launch the Disk Utility app to format the connected flash drive. The app will be titled, “Install macOS High Sierra”. Step 1: To begin, download macOS High Sierra 10.13 installer app from the Mac App Store.

Note: By using USB 3.0 you might face some issues while booting into the installer, in that case, please try using USB 2.0 drive. In order to make bootable USB of macOS high Sierra, you will need an 8gb or higher USB 2.0 or USB 3.0 drive.

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