Do not trust random DMG websites. Keep your system secure, and enjoy the stability of the last great Catalina release.
hdiutil detach /Volumes/Install\ macOS\ Catalina mv /tmp/Catalina.dmg ~/Desktop/Catalina.dmg Use code with caution. Copied to clipboard 3. Creating a Bootable USB Mac Os Catalina 10.15.7 Download Dmg
If you only have the InstallESD.dmg , use Disk Utility to restore it to the USB drive. However, this method sometimes fails to create a bootable recovery. The createinstallmedia command is more reliable. Do not trust random DMG websites