hdiutil create -o /tmp/Catalina -size 8500m -volname Catalina -layout SPUD -fs HFS+J
. To get an ISO for virtual machines (like VirtualBox or VMware) or for use on Windows, you must convert the installer on a Mac: Download the installer using the steps above. Mount the Installer: Open Terminal and create a blank disk image: macos catalina 10157 iso download new
However, if you're planning to perform a clean installation using an ISO file, make sure to download it from a trusted source and follow the installation instructions carefully. macos catalina 10157 iso download new
: hdiutil detach /Volumes/Install\ macOS\ Catalina followed by hdiutil convert /tmp/Catalina.dmg -format UDTO -o ~/Desktop/Catalina.iso 3. Third-Party "Full Installer" Tools macos catalina 10157 iso download new