Follow the on-screen prompts to select your internal drive and begin the installation.
High Sierra introduced the , which significantly improved file speed and security for SSD users. It is also the last version of macOS to support many 32-bit applications reliably, making it an essential OS for users running older professional software suites.
Apple officially provides legacy versions of macOS through the Mac App Store and their support website. macos high sierra download dmg install
Select your internal startup disk (usually labeled "Macintosh HD") and click .
Open Terminal and paste the following command: sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume Follow the on-screen prompts to select your internal
Format it as (or Mac OS Extended if you are using an older HDD). Start Installation: Close Disk Utility and select Install macOS .
Click "Get." This will download a file named Install macOS High Sierra.app into your Applications folder. Apple officially provides legacy versions of macOS through
Open the macOS High Sierra download page in your browser. This will prompt the Mac App Store to open.
Before downloading, ensure your Mac supports macOS High Sierra. Generally, the following models are compatible: Late 2009 or newer MacBook Air/Pro: Late 2010 or newer iMac: Late 2009 or newer Mac Mini/Pro: Mid 2010 or newer
Press , type your admin password, and wait for the process to finish. Step 4: Installing macOS High Sierra