Open (Press Cmd + Space , type Terminal, and press Enter). Copy and paste the following command:

For users who are not comfortable with the command line or do not have access to a Mac, there are third-party tools that can simplify the process. For example, applications like iBoysoft DiskGeeker offer a graphical interface to download macOS installers directly and convert them to ISO files in a few clicks. Some websites also offer pre-made ISO and VMDK files for macOS High Sierra for use in VMware and VirtualBox.

Before downloading macOS High Sierra 10.13 ISO and DMG files, make sure you have the following:

Close Disk Utility, select , and follow the on-screen prompts. To help you get exactly what you need, let me know:

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

At least 14.3GB of available space for the upgrade. 3. Creating ISO and DMG Files

There are a few ways to download macOS High Sierra 10.13 ISO and DMG files. Here are the most common methods:

While Apple continues to push the boundaries with macOS Sonoma and Sequoia, there is a quiet but significant portion of the Apple user base that still relies on macOS High Sierra (version 10.13). Released in 2017, High Sierra was a pivotal update, introducing the Apple File System (APFS) and laying the groundwork for modern Mac performance.