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: SHA-1: 25497c4fef08f6b5ca91f0bcd1a5658d224ff53b
If you already have High Sierra and just need the latest point updates (like 10.13.6), you can download these directly from Apple Support Downloads
Contrary to popular belief, Apple still hosts old installers, but they are hidden from the App Store search. Here is how to retrieve the official .
Click "Get." This will download the "Install macOS High Sierra.app" directly into your Applications folder. download macos high sierra 1013 iso and dmg upd
This command will create a sparse image file at /tmp/HighSierra.sparseimage .
Once your installation media is prepared, you can proceed with the operating system deployment. the target Mac machine completely.
The safest way to get High Sierra is directly from Apple. Third-party sites often host "distros" that may contain malware or unauthorized modifications. This command will create a sparse image file
Beyond the hardware, your Mac must be running OS X 10.8 or a newer version to perform the upgrade. In terms of storage space, you will need approximately 14.3 GB of free storage for the upgrade. Additionally, ensure you have at least 2 GB of RAM installed. For a clean installation, a larger USB flash drive (16 GB or 32 GB) is required to hold the installer files.
23 Dec 2025 — Each macOS includes the latest built-in apps available for that macOS, including Safari, Mail and Apple Music (formerly iTunes). * Apple Support
Once you have the installer application in your Applications folder, you can create a bootable USB drive to perform a clean installation on any compatible Mac. Prerequisites A USB flash drive with at least of storage. The safest way to get High Sierra is directly from Apple
: On a Mac running macOS Catalina 10.15 or later, use the following command to download the full installer directly: softwareupdate --fetch-full-installer --full-installer-version 10.13.6 .
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Turn on the Mac while immediately holding down the key. Release the key when the startup manager screen appears. Select Install macOS High Sierra and hit Enter.