for systems already running an earlier version of High Sierra. Apple Support Third-Party ISO & DMG Mirrors
Before downloading, ensure your hardware matches the requirements for this operating system. Minimum Requirement Intel Core 2 Duo, Core i3, i5, i7, or Xeon Memory (RAM) 2 GB minimum (4 GB recommended) Storage Space 8.8 GB of available disk space System File Format Apple File System (APFS) for SSDs Supported Mac Models MacBook: Late 2009 or newer MacBook Air / Pro: Late 2010 or newer Mac mini / iMac: Late 2009 or newer Mac Pro: Mid 2010 or newer
Once you have your "Install macOS High Sierra.app" or DMG, follow these steps to create a bootable drive:
You will now find a clean, bootable HighSierra.iso file sitting directly on your desktop, ready for use in any hypervisor. Section 3: Creating a Bootable USB Installer download macos high sierra 1013 iso and dmg upd
If you have a compatible Mac (Late 2009 or newer), the official method remains the safest.
These are often pre-patched or converted files designed to bypass the hardware checks found in standard Apple installers.
packages (e.g., 10.13.2 or 10.13.6 Combo Updates). For full system images, users often turn to community-maintained archives. Apple Support for systems already running an earlier version of
Open via Spotlight or through your Utilities folder. Execute the following precise system command:
Ensure the Install macOS High Sierra.app file resides completely inside your folder. Step 2: Run Terminal Commands
This file format is modified specifically for emulator and virtualization software. ISO (Standard Disc Image) File Size: ~5.5 GB Section 3: Creating a Bootable USB Installer If
Virtualization platforms like VMware, VirtualBox, or QEMU require an ISO image rather than a DMG package. Because Apple does not distribute official ISO files, you must build one using the Terminal app on a Mac. Step 1: Download the Installer
To summarize, whether you need to download macOS High Sierra for a direct upgrade, to create a bootable USB, or to generate an ISO for a virtual machine, the journey always begins with one file: the official from the Mac App Store or Apple's support pages.
Run the following command (assuming your USB is named "MyVolume"): sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
This is the most common error when downloading from third-party sources or moving the app between Macs.
