If Terminal seems daunting, tools like or "DiskMaker X" can create bootable USB drives, but not directly to ISO. For ISO, a community script like "macos-guest-virtualbox" (on GitHub) automates the entire process.
To run High Sierra on Windows or another macOS installation via VM:
Version 10.13.5 specifically patched several security vulnerabilities, including a notable flaw in xnu (the macOS kernel) that could allow a malicious application to execute arbitrary code. For users and administrators, 10.13.5 represented a stable midpoint—more polished than the initial 10.13.0, yet before the end-of-life transition that would occur with macOS Mojave in late 2018.
In the storage settings, mount your HighSierra.iso into the virtual optical drive. macos high sierra 10.13.5.iso
Before attempting to install macOS High Sierra via an ISO, ensure your hardware fits the minimum specifications. Officially Supported Mac Hardware 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 or more highly recommended).
Complete Guide to Downloading and Installing macOS High Sierra 10.13.5 ISO
If you must use a third-party archive file, test its functionality inside an isolated virtual machine environment first, without logging into your primary iCloud or Apple ID accounts. If you(Windows, macOS, or Linux) If Terminal seems daunting, tools like or "DiskMaker
The 10.13.5 update focused primarily on stability and a long-awaited cloud feature: Messages in iCloud:
(Note: You will need to enter your Mac administrator password here). hdiutil detach /Volumes/Install\ macOS\ High\ Sierra Use code with caution. Convert the DMG image into an ISO file:
If you just need a bootable USB drive for a real Mac, use Apple’s createinstallmedia – an ISO is unnecessary. For users and administrators, 10
What are you currently using to prepare the installation media?
OS X Mountain Lion 10.8 or later to upgrade directly.
High Sierra is the final macOS version to support older Macs that lack Metal-compatible graphics processors.
It allows you to create a bootable USB drive to install the OS on a real Mac or mount it in virtualization software like VMware or VirtualBox.