Some trusted Mac admin sites host old installers, but check the SHA checksum before running. Example:
To download the macOS High Sierra (10.13.6) installer, you must use a compatible Mac to access the full installer through the Mac App Store or Apple's official support links. Official Download Methods
To download macOS High Sierra 10.13.6 (as a .dmg or full installer), you have a few official and safe options:
Once your bootable media is ready, follow these steps to install the OS: Turn off the target Mac completely.
Type your Mac's administrator password when prompted (no characters will show on screen as you type) and press . download macos high sierra 10.13.6 dmg mac
Through community archiving efforts, direct links to the full InstallOS.dmg file have been preserved. These DMGs are direct copies originally distributed by Apple. You can download the full installer using the following URL:
Download macOS High Sierra 10.13.6 DMG: Direct Install Guide for Mac
Are you currently downloading from a or a Windows PC ?
Wait for the process to reach 100%. Once done, your USB drive will be renamed Install macOS High Sierra . 5. Installing macOS High Sierra Using Your Bootable USB Some trusted Mac admin sites host old installers,
Download the InstallAssistant.pkg file on a compatible Mac. Open the package and follow the prompts. It extracts the official Install macOS High Sierra.app directly into your /Applications folder. 2. Mac App Store Route
OS X Mountain Lion 10.8 or later already installed to upgrade directly. How to Create a Bootable macOS High Sierra USB Drive
Yes, if you know the source.
Before you proceed, it’s crucial to understand that downloading and installing macOS High Sierra comes with significant security risks. Type your Mac's administrator password when prompted (no
Ensure your Mac is natively supported before proceeding with the installation. Late 2009 or newer models MacBook Air: Late 2010 or newer models MacBook Pro: Mid 2010 or newer models Mac mini: Mid 2010 or newer models iMac: Late 2009 or newer models Mac Pro: Mid 2010 or newer models How to Create a Bootable USB Installer DMG
On newer Macs, this may open the "Software Update" pane in System Settings. Confirm the download there. Once finished, the installer will be in your Applications folder, named Install macOS High Sierra Apple Support Community 2. Download via Terminal (For macOS 10.15+)
: If you have the "Install macOS High Sierra.app" in your Applications folder, run the following in Terminal: