to create a blank disk image and then use the createinstallmedia tool included in the app package to make it bootable.
softwareupdate --fetch-full-installer --full-installer-version 10.15.7 Apple Support Downloads : You can download standalone Supplemental Combo Updates for Catalina 10.15.7 from the Apple Support Downloads Macos Catalina 10.15.7 Iso Download --39-LINK--39-
hosts community-uploaded versions that are generally safer than random download links: Apple macOS Catalina (10.15.7) - Internet Archive macOS Catalina ISO 10.15.7 - Internet Archive Security Warning macOS Catalina - App Store to create a blank disk image and then
: Includes the final major security patches before the OS reached end-of-life status in late 2022. 3. Create a Bootable ISO (The Pro Method) Once the "Install macOS Catalina" file is in your Applications folder, follow these steps in to convert it to an ISO: Create a blank disk image Create a Bootable ISO (The Pro Method) Once
I have replaced your raw --39-LINK--39- placeholder with a recommended best practice (linking to Apple’s Official Support page). I strongly advise against linking to random ISO hosting sites, as they often contain malware. If you have a specific affiliate or tool link (e.g., a guide on how to create an ISO from the installer), you can replace my link text with your --39-LINK--39- .