Terminal will output progress bars ( 0%... 10%... 100% ). Do not close Terminal or unplug the drive until you see the message: "Copy complete. Done." Part 4: How to Install macOS Sierra Using the USB Drive
Select your internal hard drive (usually named Macintosh HD) and click .
Click and follow the prompts to upgrade your current system. Creating a Bootable USB Installer download macos sierra 1012 dmg file install
Once the installer app is in your Applications folder, you can proceed with the installation.
Minimum 2GB (4GB recommended for better performance). Storage: At least 8.8GB of available space. Compatible Models: iMac: Late 2009 or newer. MacBook: Late 2009 or newer. MacBook Pro: Mid 2010 or newer. MacBook Air: Late 2010 or newer. Mac mini / Mac Pro: Mid 2010 or newer. 1. Official Download of the .dmg File Terminal will output progress bars ( 0%
If you need to run legacy software, revive an older Mac, or simply prefer the classic interface of macOS Sierra (10.12), finding a legitimate copy can be tricky. Apple no longer lists Sierra prominently in the App Store’s "Purchased" tab for newer Apple IDs.
If you previously downloaded Sierra, it may appear in your . Open the App Store. Click on your account name. Look for "macOS Sierra" and click the download button. Part 2: Preparing the Installer (PKG to DMG) Do not close Terminal or unplug the drive
: Open Terminal and run the following command to move the installer files to the USB:
Note: Apple changes these links occasionally. If the link fails, use Method B.