Open the macOS High Sierra download page in your browser. This will prompt the Mac App Store to open.
Once your bootable drive is ready, follow these steps to install the OS:
To perform a clean install, you must create a bootable USB installer. You will need a USB flash drive with at least . Format the Drive: Open Disk Utility . Select your USB drive and click Erase . Format: Mac OS Extended (Journaled) . Scheme: GUID Partition Map . Name the drive: MyVolume . Use the Terminal: macos high sierra download dmg install
This guide provides a comprehensive walkthrough for downloading the macOS High Sierra (10.13) DMG file and performing a clean installation. Whether you are reviving an older Mac or need a reliable environment for specific legacy software, High Sierra remains a stable and popular choice.
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 Open the macOS High Sierra download page in your browser
Open Terminal and paste the following command: sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
Click "Get." This will download a file named Install macOS High Sierra.app into your Applications folder. You will need a USB flash drive with at least
If you specifically need a .dmg file for virtualization (like VirtualBox) or deployment, you can use the hdiutil command in the Terminal to convert the .app installer into a disk image. Step 3: Create a Bootable USB Drive
Select your internal startup disk (usually labeled "Macintosh HD") and click .