You hit Enter.
Using older versions of macOS comes with risks. macOS High Sierra no longer receives security updates from Apple.
GibMacOS outputs a .dmg . To get a raw image file (similar to a hypothetical .rdr ), use dd :
Given the niche nature of .rdr files, they aren't hosted on Apple's official servers. Instead, they are found on community-driven sites for system integrators and Hackintosh enthusiasts. One of the most prominent sources for such files is the website . The specific page for the macOS High Sierra 10.13.5 .rdr image is often titled: download macos high sierra 10.13.5 image file -.rdr-
A new volume appears on your desktop. Its icon is not a hard drive. It is a folder. A classic blue linen folder from Mac OS 9. Its label: “Rhapsody’s Attic”
Within your VM software, create a new macOS virtual machine.
There are two buttons: Remind Me Tomorrow and Install Now . You hit Enter
The system replies: Operation not permitted. This action would violate the 10.13.5 covenant.
You are now in the version of macOS that remembers you.
This guide provides a comprehensive overview of acquiring, verifying, and using the macOS High Sierra 10.13.5 image for a clean installation or virtualization, including how to handle various file formats for Hackintosh or virtual machine projects. What is macOS High Sierra 10.13.5? GibMacOS outputs a
At 100%, the file does not save to your Downloads folder.
You can find community-archived versions of and DMG files on the Internet Archive. These are often used for VirtualBox or VMware installations. Search Term: "Mac OS High Sierra 10.13.5.iso" Source: Internet Archive High Sierra 2. GitHub Repositories (Best for USB Bootable Images)