Macos High Sierra Download Dmg Install Guide
Disclaimer: macOS High Sierra is no longer receiving security updates from Apple. It is recommended only for legacy software compatibility or offline machines.
Downloading and installing macOS High Sierra in 2026 typically requires bypassing the standard App Store search, as older versions are often hidden or restricted on newer hardware. The official method provides an .app installer rather than a .dmg file; if you require a DMG for specific uses (like virtual machines), you must usually convert the official installer or use third-party tools. Download Methods
App Store (Official Link): The most secure method is using a direct link to the macOS High Sierra App Store page. This typically only works on Macs compatible with High Sierra.
Mist (Recommended Utility): For users on newer Macs (including Apple Silicon), the open-source utility Mist can download High Sierra directly from Apple's servers and create a bootable installer.
Terminal: On Macs running macOS Catalina or later, you can attempt to fetch the installer using this command:softwareupdate --fetch-full-installer --full-installer-version 10.13.6.
Patcher Tool: For Macs not officially supported by Apple, the dosdude1 High Sierra Patcher can download the full OS and modify it for installation. Installation Requirements
To install macOS High Sierra, your system must meet these minimum specifications:
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. Step 1: Verify Hardware Compatibility
Before downloading, ensure your Mac supports macOS High Sierra. Generally, the following models are compatible: MacBook: Late 2009 or newer MacBook Air/Pro: Late 2010 or newer iMac: Late 2009 or newer Mac Mini/Pro: Mid 2010 or newer
You also need at least 2GB of RAM and 15GB of available storage space. Step 2: Download the macOS High Sierra DMG
Apple officially provides legacy versions of macOS through the Mac App Store and their support website.
Official Mac App Store Link: Open the macOS High Sierra download page in your browser. This will prompt the Mac App Store to open.
Download the Installer: Click "Get." This will download a file named Install macOS High Sierra.app into your Applications folder.
Converting to DMG (Optional): 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
To perform a clean install, you must create a bootable USB installer. You will need a USB flash drive with at least 16GB of capacity. 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
Open Terminal and paste the following command:sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
Press Enter, type your admin password, and wait for the process to finish. Step 4: Installing macOS High Sierra
Once your bootable drive is ready, follow these steps to install the OS:
Backup Your Data: Use Time Machine or an external drive. A clean install will wipe your current data. Boot from USB: Plug the USB into the Mac. Restart the Mac while holding the Option (Alt) ⌥ key.
Release the key when you see the bootable volumes; select the "Install macOS High Sierra" drive. Wipe the Drive: From the macOS Utilities window, select Disk Utility.
Select your internal startup disk (usually labeled "Macintosh HD") and click Erase.
Format it as APFS (or Mac OS Extended if you are using an older HDD). Start Installation: Close Disk Utility and select Install macOS.
Follow the on-screen prompts to select your internal drive and begin the installation. Why macOS High Sierra?
High Sierra introduced the Apple File System (APFS), 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.
Are you looking to install High Sierra on a PC (Hackintosh) or a specific Mac model?
A key feature introduced during the installation of macOS High Sierra is the transition to the Apple File System (APFS).
During the upgrade process, the installer automatically offers to convert your Mac's internal flash storage (SSD) to APFS, which is specifically designed for modern storage technologies. This 64-bit architecture provides several immediate benefits:
Instant File Operations: Common tasks like duplicating files or calculating folder sizes become nearly instantaneous.
Enhanced Reliability: Built-in crash protection and advanced data integrity features help safeguard your data against power outages and system crashes. Click Erase
Native Encryption: It offers built-in, native encryption at the file system level for increased security.
Storage Optimization: Optimized storage handling in macOS High Sierra allows apps like Mail to use up to 35% less space on your drive. Additional Noteworthy Features
If you are downloading the macOS High Sierra DMG to perform a fresh install, you will also gain access to: Best Features of macOS High Sierra
To download and install macOS High Sierra (10.13), you should use the official Apple App Store link or terminal-based methods to ensure security and stability. 1. Download Official Installer
Apple provides the High Sierra installer through the Mac App Store. Note that these links may only work if your Mac is compatible with the OS. App Store Link: Get macOS High Sierra
Direct DMG/Package: Apple also offers a direct download for older systems via their support site: How to download and install macOS. 2. Create a Bootable USB (Recommended)
Once the installer (Install macOS High Sierra.app) is in your Applications folder, creating a bootable USB is the most reliable way to install or reinstall. Connect a USB drive (at least 16GB).
Open Terminal and paste the following command (replace MyVolume with your USB drive's name):
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume Use code with caution. Copied to clipboard
Press Enter, type your password, and wait for the process to finish. 3. Installation Steps
Upgrade: Simply open the "Install macOS High Sierra" app and follow the prompts.
Clean Install: Restart your Mac and hold the Option (⌥) key. Select the USB drive to boot into recovery, use Disk Utility to erase your hard drive (APFS format recommended), and select Reinstall macOS. Critical Technical Requirements
Compatibility: High Sierra supports Macs from late 2009 (MacBook/iMac) or 2010 (Pro/Air/Mini) and newer.
Firmware Updates: High Sierra often requires a firmware update during installation to support the APFS file system. Ensure your Mac is plugged into power. Disclaimer: macOS High Sierra is no longer receiving
Safety Warning: Avoid downloading .dmg files from third-party "warez" or "direct download" sites, as these often contain malware or modified system files.
Are you looking to install this on a specific Mac model, or are you trying to set it up in a Virtual Machine?
macOS High Sierra (10.13), released in 2017, was a transformative "under-the-hood" update that focused on performance and reliability rather than visual flair. While Apple no longer officially supports it with security updates, it remains a vital OS for older Mac hardware. Deep Review: The Core Innovations
Apple File System (APFS): Replaced the decades-old HFS+. It made common tasks like duplicating files and calculating folder sizes near-instant while improving crash protection and encryption.
HEVC (H.265): Introduced a new video standard that offers up to 40% better compression than H.264, allowing for high-quality 4K video without ballooning file sizes.
Metal 2: Refined Apple's graphics API, introducing support for External GPUs (eGPU) and VR content creation.
Safari Enhancements: Added "Intelligent Tracking Prevention" to block cross-site tracking and an option to disable autoplay videos. Download and Installation Guide
Getting the installer today requires specific methods as it is often hidden or restricted on newer Macs. 1. Official Download Methods Using macOS High Sierra in 2025
Note: macOS High Sierra (10.13) is obsolete and no longer receives security updates. This guide is intended for legacy hardware or specific software compatibility only.
Apple still hosts the installer package on its servers, but it’s hidden.
If the link fails, use Method B.
If you installed High Sierra on a Mac older than 2009 (MacBook 5,2 or iMac 7,1), you need post-install patches for Wi-Fi, graphics, and USB. Use the macOS High Sierra Patcher tool from DosDude1 – run the patcher from the USB after the main install.
Apple provides an official download link, but it’s hidden. Here’s how to get it:
For a true DMG installer (older method), trusted sources like dosdude1.com (patched Mac tools) offer them, but always verify checksums.