High Sierra lacks drivers for T2 chips and newer SSDs. It will refuse to install. This OS is strictly for legacy machines (pre-2017).
. While it is no longer the primary OS for modern Macs, it remains a vital "bridge" version for users running older hardware or 32-bit applications that are not supported in later versions like macOS Catalina. Apple Support 📥 Official Download Options
A: The final build number of the High Sierra 10.13.6 full installer, as distributed by Apple, is 17G66 .
| Mac Model | Minimum Compatible Model | | :--- | :--- | | | Late 2009 or later | | MacBook Pro | Mid 2010 or later | | MacBook Air | Late 2010 or later | | Mac mini | Mid 2010 or later | | iMac | Late 2009 or later | | Mac Pro | Mid 2010 or later |
Before downloading the installer, ensure your Mac hardware is officially compatible with macOS 10.13.6: Late 2009 or newer MacBook Air: Late 2010 or newer MacBook Pro: Mid 2010 or newer Mac mini: Mid 2010 or newer iMac: Late 2009 or newer Mac Pro: Mid 2010 or newer Minimum Hardware Specs: Memory: 2 GB of RAM (4 GB recommended) macos high sierra 10136 dmg full
hdiutil create -o /tmp/HighSierra -size 5600m -layout SPUD -fs HFS+J Use code with caution. Mount the temporary disk image:
The most significant change was the introduction of the Apple File System (APFS). This modern 64‑bit architecture replaced the aging HFS+ system. APFS is designed for flash storage (SSDs), bringing incredible speed to common tasks like copying files and calculating folder sizes. It also offers native, crash‑safe encryption for enhanced security.
Open your web browser and navigate to the official Apple Support page for older macOS versions.
A USB flash drive with at least of total storage space. High Sierra lacks drivers for T2 chips and newer SSDs
Your completed full DMG file will now be sitting on your Desktop. Creating a Bootable USB Installer Using the Terminal
Designed for SSDs, APFS provides faster file cloning, better storage management, and improved system responsiveness.
macOS High Sierra - Technical Specifications - Apple Support
A: The official cutoff is mid-2010. However, patchers exist. Without a patcher, a 2009 iMac is not supported for 10.13.6. | Mac Model | Minimum Compatible Model |
Unlike newer macOS versions, High Sierra supports older, 32-bit applications.
When you install from the 10.13.6 (17G66) DMG, your system will be mostly up-to-date. However, Apple continued to release a few minor for 10.13.6 even after the release of macOS Mojave.
This downloads the full installer directly from Apple’s CDN to your /Applications folder.