Installing macOS High Sierra 10.13.6 via a DMG file is a common method for users looking to perform a clean install, upgrade an older machine, or rescue a system that cannot boot. While newer versions of macOS have moved to different formats, the 10.13.6 DMG remains a vital tool for maintaining compatible legacy hardware. System Requirements for macOS High Sierra

Before downloading, ensure your Mac is compatible. High Sierra generally supports the same hardware as macOS Sierra. Memory: 2GB minimum (8GB recommended).

Storage: At least 14.3GB of available space for the upgrade. Compatible Models: MacBook: Late 2009 or newer. MacBook Air/Pro: Mid 2010 or newer. Mac mini: Mid 2010 or newer. iMac: Late 2009 or newer. Mac Pro: Mid 2010 or newer. Where to Download macOS High Sierra 10.13.6 DMG

Apple provides official routes to obtain the installer, though searching the App Store directly on modern macOS versions may not work.

macOS High Sierra - Technical Specifications - Apple Support

Installing macOS High Sierra 10.13.6 from a DMG File: A Step-by-Step Guide

macOS High Sierra 10.13.6 is a popular operating system for Macs, offering a range of features and improvements. If you've downloaded the macOS High Sierra 10.13.6 DMG file and are looking to install it, this guide will walk you through the process.

Before You Begin

Preparing the DMG File

  1. Download the macOS High Sierra 10.13.6 DMG file: If you haven't already, download the DMG file from the official Apple website or a trusted source.
  2. Verify the DMG file: Check the integrity of the DMG file by verifying its checksum (if provided).
  3. Mount the DMG file: Double-click the DMG file to mount it. You can also use the hdiutil command in Terminal: hdiutil attach /path/to/macos_high_sierra_10.13.6.dmg

Creating a Bootable Installer

  1. Open Disk Utility: You can find Disk Utility in Applications/Utilities or use Spotlight to search for it.
  2. Select the DMG file: In Disk Utility, select the mounted DMG file (it should appear as a virtual disk).
  3. Create a bootable installer: Go to File > New Image > New Image from [DMG file name]. Choose a location to save the new image and select Mac OS Extended (Journaled) as the format. Name the image (e.g., "macOS High Sierra 10.13.6 Installer").
  4. Create the bootable installer: Disk Utility will create a new IMG file. This process may take a few minutes.

Installing macOS High Sierra 10.13.6

  1. Restart your Mac: Shut down your Mac or restart it.
  2. Hold down the Option (⌥) key: Immediately hold down the Option (⌥) key while booting up your Mac.
  3. Select the bootable installer: Release the Option key when you see the Startup Manager window. Select the bootable installer (the one you created earlier) and click the arrow or press Return.
  4. Start the installation process: The macOS High Sierra installer will launch. Follow the on-screen instructions to begin the installation process.
  5. Select the installation disk: Choose the disk where you want to install macOS High Sierra 10.13.6. You can select the startup disk or a different disk.
  6. Install macOS High Sierra: The installation process will begin. This may take some time, depending on your Mac's performance and the installation disk.

Post-Installation Steps

  1. Configure your Mac: Follow the on-screen instructions to set up your Mac, including selecting your language, country or region, and setting up your Apple ID.
  2. Update macOS High Sierra: Go to System Preferences > Software Update to ensure you're running the latest version of macOS High Sierra.
  3. Restore your data: If you backed up your files, you can now restore them to your Mac.

Conclusion

Installing macOS High Sierra 10.13.6 from a DMG file requires some technical expertise, but by following these steps, you can successfully create a bootable installer and install the operating system on your Mac. Remember to always back up your important files and data before attempting to install a new operating system.

Additional Tips and Troubleshooting

To install macOS High Sierra 10.13.6 using a DMG file, you need to download the official installer, prepare a bootable USB drive, and then execute the installation. This guide covers how to do this on a Mac or a Windows PC. 1. Official Download Methods

Apple primarily provides High Sierra as a full installer app via the Mac App Store. If you specifically need a DMG file for external use, follow these steps:

Direct Download (Safe Source): Use the official links on the Apple Support Download page.

Automated Utility: Use the Mist utility on GitHub to download older macOS versions directly from Apple servers.

Combo Update: If you already have 10.13, you can download the macOS High Sierra 10.13.6 Combo Update to upgrade to the latest build. 2. Create a Bootable USB Installer

You will need a USB flash drive with at least 16GB of capacity. On a Mac (Recommended)

Format the Drive: Use Disk Utility to erase the USB drive. Choose Mac OS Extended (Journaled) as the format and GUID Partition Map as the scheme. Name it MyVolume.

Use Terminal: Open Terminal and paste the following command:sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume Enter your admin password and type Y to confirm. On Windows

Use TransMac: Download and run TransMac as an administrator.

Format for Mac: Right-click your USB drive in TransMac and select Format Disk for Mac.

Restore DMG: Right-click the drive again, select Restore with Disk Image, and choose your High Sierra DMG file. 3. System Requirements Ensure your hardware is compatible before proceeding:

macOS High Sierra 10.13.6 DMG Install: A Deep Dive

In 2017, Apple released macOS High Sierra, a significant update to its macOS operating system. The final version, 10.13.6, was released on September 26, 2018. This write-up focuses on the installation process using a DMG (Disk Image) file for macOS High Sierra 10.13.6.

Overview of macOS High Sierra

macOS High Sierra was a crucial update that laid the foundation for future macOS versions. It introduced several significant features, including:

  1. APFS (Apple File System): A new file system designed to replace HFS+, offering improved performance, security, and reliability.
  2. HEVC (High Efficiency Video Coding): A new video codec for efficient video compression and playback.
  3. Metal 2: An updated graphics API for improved graphics performance.
  4. Safari 11: A new version of Apple's web browser, featuring improved performance and security.

Preparing for Installation

Before installing macOS High Sierra 10.13.6 using a DMG file, ensure your Mac meets the system requirements:

Downloading the DMG File

To obtain the macOS High Sierra 10.13.6 DMG file, you can:

  1. Download from the Mac App Store: Visit the Mac App Store, search for "macOS High Sierra," and click the "Get" button. The installer will be downloaded to your Applications folder.
  2. Download from Apple Support: Visit Apple's support website, search for "macOS High Sierra," and download the installer from there.

Creating a Bootable Installer

To create a bootable installer using the DMG file:

  1. Open Disk Utility: Located in Applications/Utilities.
  2. Select the DMG file: Choose the downloaded DMG file and click "Open."
  3. Create a new disk image: Click "New Image" and select "DVD/CD Master" as the image type.
  4. Save the image: Save the image to an external drive or USB drive with enough free space (at least 8 GB).

Installing macOS High Sierra

To install macOS High Sierra 10.13.6 using the DMG file:

  1. Double-click the DMG file: Open the DMG file, and a new window will appear with the installer.
  2. Run the installer: Double-click "Install macOS High Sierra" to begin the installation process.
  3. Agree to the terms: Read and agree to Apple's terms and conditions.
  4. Select the installation disk: Choose the disk where you want to install macOS High Sierra.
  5. Wait for installation: The installation process will begin, and your Mac will restart several times.

Post-Installation Steps

After installing macOS High Sierra 10.13.6:

  1. Configure your Mac: Follow the on-screen instructions to set up your Mac, including creating a user account and configuring network settings.
  2. Update your Mac: Check for updates in System Preferences to ensure you have the latest security patches and features.

Tips and Considerations

Conclusion

Installing macOS High Sierra 10.13.6 using a DMG file requires careful preparation and attention to detail. By following these steps, you can successfully install this version of macOS and take advantage of its exciting features. Keep in mind that macOS High Sierra is an older version of the operating system, and it's recommended to upgrade to a newer version, such as macOS Monterey or later, for the latest security patches and features.

Installing macOS High Sierra (10.13.6) from a DMG file involves extracting the installer and then running the system update. High Sierra is often the final supported OS for many older Macs, such as the 2011 MacBook Pro. 1. Download the Official Installer

To ensure security, always obtain the macOS High Sierra DMG directly from Apple Support. Avoid third-party mirrors to prevent malware risks. 2. Extract the Installer Package

Unlike standard apps, a macOS DMG usually contains a .pkg installer that places the actual "Install macOS High Sierra" app into your Applications folder. Double-click the .dmg file to mount it. In the window that opens, double-click the .pkg file.

Follow the prompts to "install" the installer onto your hard drive. 3. Run the macOS Installation

Once the package finish running, the installer application will be available in your system. Open your Applications folder. Find and double-click Install macOS High Sierra.

Click Continue and follow the on-screen instructions to begin the upgrade. 4. Create a Bootable USB (Optional)

If you need to perform a clean install or recover a non-booting Mac, you can use the extracted installer to create a bootable drive using the createinstallmedia command in Terminal. Post-Installation Tips

Security: High Sierra received its last security update in late 2020, so use caution when browsing the modern web.

Future Upgrades: If your hardware supports it, the next logical upgrade from High Sierra 10.13.6 is macOS Mojave (10.14.6) or macOS Catalina (10.15.8).

Are you installing this on an older Mac for compatibility, or are you looking to create a bootable USB drive for a clean install? Using macOS High Sierra in 2025

To install macOS High Sierra 10.13.6 using a DMG file, you typically need to download the installer, create a bootable USB drive, and then perform the installation. 1. Download the Installer

Official Method (Safari only): Visit the official Apple Support Page to find the App Store link for High Sierra. Using other browsers may result in errors.

Third-Party Tools: For modern Macs (Apple Silicon/Intel) that block direct downloads of older OS versions, the Mist utility on GitHub can download legitimate installers directly from Apple's servers. 2. Create a Bootable USB

You will need a USB flash drive with at least 16GB of capacity. On a Mac:

macOS High Sierra dmg download for making bootable usb insttaller

How to Download and Install macOS High Sierra 10.13.6 in 2026

If you are trying to revive an older Mac or need a specific environment for legacy software, macOS High Sierra 10.13.6 remains a vital piece of software. While Apple has officially ended security support, the installer is still accessible if you know where to look. 1. Downloading the High Sierra Installer

You cannot simply search for High Sierra in the modern App Store on a newer Mac. Instead, use these official channels: App Store Direct Link: Apple provides a direct link to the macOS High Sierra App Store page

. This will download a "Install macOS High Sierra.app" file to your Applications folder. Apple Support Downloads:

For those who already have 10.13 installed and just need the final update, you can download the macOS High Sierra 10.13.6 Combo Update directly as a DMG file. 2. Preparing a Bootable USB (Optional but Recommended)

If you are performing a clean install, a bootable USB drive is the most reliable method. Microsoft Community Hub Requirements: A USB drive with at least 16GB of space. Terminal Command:

After downloading the installer from the App Store, use the following command in Terminal (replace with your USB's name):

sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume 3. Installation Steps

Once you have your installer ready, follow these steps to complete the setup: Backup Your Data:

Ensure all important files are backed up, as a clean install will wipe the drive. Boot the Installer: Restart your Mac and hold the Option (⌥)

key during startup. Select "Install macOS High Sierra" from the list of bootable drives. Format the Drive: Disk Utility to format your target drive as (for SSDs) or Mac OS Extended (Journaled) (for older HDDs). Run the Installer:

Exit Disk Utility and select "Install macOS" to follow the on-screen prompts. 4. Compatibility and Support Supported Models:

High Sierra generally supports Macs from late 2009 or 2010 onwards. Unsupported Macs:

If your Mac is older than the official cutoff, you may need a third-party tool like the OpenCore Legacy Patcher to bypass hardware restrictions. Final Version: The definitive build for High Sierra is 10.13.6 (17G14042) , released as a security update in late 2020. Terminal commands to verify your DMG file's integrity or help with troubleshooting "damaged" installer

macOS High Sierra dmg download for making bootable usb insttaller

The legacy of macOS High Sierra (version 10.13.6) is often defined by its role as a "refinement" update, prioritizing under-the-hood stability and foundational technology over flashy user-interface changes. While it is technically obsolete and unsupported by Apple as of November 2020, it remains a critical bridge for vintage hardware and specialized software workflows. The Foundational Shift: APFS and Metal 2

The true significance of High Sierra lies in its introduction of the Apple File System (APFS). This replaced the decades-old HFS+ format, offering modern features like:

Instant Cloning: Duplicating large folders became nearly instantaneous, as the system saved only the changes ("deltas") rather than full copies of the data.

Native Encryption: Built-in volume encryption improved security for internal SSDs.

Performance on SSDs: The system was specifically optimized for flash storage, significantly boosting responsiveness on older Macs upgraded with SSDs.

Additionally, the update introduced Metal 2, providing better GPU utilization and laying the groundwork for VR support and external GPU (eGPU) compatibility on newer models. Why High Sierra Persists in 2026

Despite the lack of official security patches, many users still rely on version 10.13.6 for specific reasons: Using macOS High Sierra in 2025

To install macOS High Sierra 10.13.6 , you generally need to download the installer from Apple and then run the installation process. Note that High Sierra is no longer officially supported with security updates. 1. Download the Installer Mac App Store: Apple still hosts the High Sierra installer on the Mac App Store

. If your Mac is compatible, downloading this will place a "Install macOS High Sierra" app in your Applications DMG vs. App: Apple typically provides the OS as an installer rather than a direct for the full OS. If you have a

file, double-click it to mount the disk image and reveal the installer app inside. 2. Basic Installation Open the Installer: Locate "Install macOS High Sierra" in your Applications folder and double-click it. Follow Prompts: and agree to the license terms. Select Disk:

Choose the drive where you want to install the OS (usually "Macintosh HD") and click

Your Mac will restart to complete the process. Ensure your Mac remains connected to power during this time. 3. Manual Installation (Clean Install)

If you need to perform a clean install or your Mac won't boot, you can create a bootable USB drive: Format USB: Disk Utility to format a USB drive (at least 16GB) as Mac OS Extended (Journaled) Create Media: createinstallmedia command in Terminal or a third-party tool like the macOS High Sierra Patcher if you are installing on an unsupported Mac. Boot from USB: Restart your Mac while holding the Option (⌥)

key, select the USB drive from the boot menu, and follow the instructions to install. dosdude1's Personal Web Server 4. Updating to 10.13.6

If you already have High Sierra but are on an older version (like 10.13.1), use Software Update

in System Preferences or the App Store to download the latest Security Updates , which will bring your system to version 10.13.6. Terminal command to create a bootable USB for High Sierra?

How I Downloaded macOS High Sierra in 2026 (Even on Older Macs)

To get the full 10.13.6 installer (approximately 5GB–6GB), you have a few options:

Official App Store Link: Use the official macOS High Sierra download link which will redirect you to the Mac App Store.

Terminal Command: If you are already on a newer macOS version (Catalina or later), open Terminal and type:softwareupdate --fetch-full-installer --full-installer-version 10.13.6.

DMG via Web Browser: For older Macs that cannot use the App Store, Apple provides direct disk image (.dmg) downloads for legacy versions on their legacy installer page. Phase 2: Create a Bootable USB Installer

You will need a USB flash drive with at least 16GB of space. Format the USB Drive: Open Disk Utility (Applications > Utilities). Select your USB drive in the sidebar. Click Erase and use these settings: Name: MyVolume (or any simple name without spaces). Format: Mac OS Extended (Journaled). Scheme: GUID Partition Map. Create the Media via Terminal: Open Terminal.

Paste the following command (assuming your USB is named MyVolume and the installer is in your Applications folder):sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume.

Enter your admin password when prompted and wait for the process to finish. Phase 3: Install macOS High Sierra Hackintosh High Sierra Installation Guide (macOS 10.13.6)

Installing macOS High Sierra (10.13.6) from a DMG involves downloading the disk image, extracting the actual installer app, and then either running it directly or creating a bootable USB. 1. Download the macOS High Sierra DMG

You can obtain the official version through the following methods:

Official Support Page: Apple provides download links for older macOS versions like Sierra and High Sierra as DMG files.

Mist Utility: If you are on a newer Mac (Monterey or later) that blocks old App Store downloads, use the Mist utility on GitHub to fetch the full installer directly from Apple's servers.

Mac App Store: Search for "macOS High Sierra" or use a direct link. Note that if the App Store only gives you a tiny file (~20MB), it is a "stub" and not the full 5GB installer. 2. Extract the Installer App

To use the "createinstallmedia" command or run the update, you must extract the .app from the .dmg: Double-click the downloaded .dmg file to mount it.

Open the mounted volume and double-click the .pkg file inside.

Follow the prompts; this will not install the OS yet. It will simply place the "Install macOS High Sierra.app" into your Applications folder. 3. Create a Bootable USB (Recommended)

This is the most reliable way to perform a clean install. You need a USB drive with at least 16GB of space. On a Mac:

Format the USB: Open Disk Utility, select your USB, and click Erase. Name: MyVolume Format: Mac OS Extended (Journaled) Scheme: GUID Partition Map.

Run Terminal Command: Open Terminal and paste the following:sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume. Enter your password and wait for the "Done" message.

How to create a bootable macOS High Sierra USB Install drive

Method A: Direct from Apple (The Official Link)

Apple still hosts the installer for High Sierra on its support website. While you get a .app file (not strictly a DMG), you can easily convert it.

  1. Open Safari (on a working Mac) and go to: https://support.apple.com/en-us/102866
  2. Click the link for "Get macOS High Sierra" – this will open the App Store.
  3. If your Mac is running an older OS, the App Store will offer to download Install macOS High Sierra.app to your /Applications folder.
  4. Once downloaded, quit the installer if it auto-launches.

macOS High Sierra 10.13.6: The Definitive Review & DMG Installation Guide

Version: 10.13.6 (Build 17G66) Release Date: July 9, 2018 Status: The final and most stable version of High Sierra.

macOS High Sierra is often described as the "Snow Leopard" of its generation—a refinement release. While it introduced major under-the-hood technologies like APFS (Apple File System) and HEVC video support, the user interface remained largely unchanged from macOS Sierra.

For users looking to install this specific version—often for legacy software compatibility or breathing new life into older hardware—tracking down the correct DMG file and understanding the installation process is crucial, as Apple often hides older installers.

Preparing a Bootable Installer from a DMG

Two common DMG types:

Steps for DMG containing installer app:

  1. Mount the DMG: hdiutil attach /path/to/HighSierra.dmg
  2. Copy the app to Applications: cp -R /Volumes/<VolumeName>/Install\ macOS\ High\ Sierra.app /Applications/
  3. Create a bootable USB (8 GB or larger) named "MyVolume":
    • Erase and format USB as Mac OS Extended (Journaled) with GUID:
      • diskutil eraseDisk JHFS+ MyVolume /dev/diskN (confirm diskN)
    • Create installer:
      • sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume --applicationpath /Applications/Install\ macOS\ High\ Sierra.app --nointeraction
  4. When complete, reboot while holding Option (Alt) and select the USB installer.

If DMG is already a bootable image:

  1. Restore image to USB:
    • Identify device: diskutil list
    • Unmount target: diskutil unmountDisk /dev/diskN
    • Restore:
      • sudo asr restore --source /path/to/HighSierraBootable.dmg --target /dev/rdiskN --erase --noverify
    • Bless and ensure bootability if needed: sudo bless --folder /Volumes/Install\ macOS\ High\ Sierra/System/Library/CoreServices --bootefi --label "HighSierra"

Step 3: Performing a Clean Install of macOS High Sierra 10.13.6

A "clean install" erases everything on your Mac’s internal drive and installs a fresh copy of the OS. This is ideal for selling a Mac, fixing deep software corruption, or starting from scratch.

Creating the Bootable USB via Terminal:

  1. Insert your USB drive.
  2. Open Disk Utility. Select the USB drive (not the volume under it). Click Erase.
    • Name: MyVolume (exactly this, case-sensitive)
    • Format: Mac OS Extended (Journaled)
    • Scheme: GUID Partition Map
  3. Open Terminal (Applications > Utilities).
  4. Copy and paste the following command (this assumes the installer is in your Applications folder):
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
  1. Press Return. Type your admin password (you won’t see characters as you type).
  2. Type Y when asked to erase the volume.
  3. Wait 10–20 minutes. Terminal will output: Install media now available at “/Volumes/Install macOS High Sierra”.

Alternative for DMG Direct Write: If your DMG is already a bootable image (rare), you can use dd:

sudo dd if=/path/to/your.dmg of=/dev/rdisk2 bs=1m

(Be extremely careful with dd – the wrong disk number can wipe your system drive.)

4. The "Dark Mode" Precursor

While Mojave introduced the system-wide Dark Mode, High Sierra introduced a Dark Mode within the Dock and Menu Bar only. It feels incomplete by today's standards, but it was a start.

Why 10.13.6? The Importance of the Final Version

Before diving into the installation process, it is crucial to understand why 10.13.6 is the most sought-after version of High Sierra.

Error 3: USB Drive Not Booting

The USB was not created correctly.