Apple’s installers use a tool called createinstallmedia . You can use Terminal commands to convert the downloaded .app file into an ISO.
: The latest release (September 2025), optimized for Apple Silicon and modern Intel Macs. Legacy Versions : If you need older 64-bit versions for compatibility, Mac Os Download Iso 64 Bit
hdiutil create -o /tmp/Sequoia -size 16G -layout SPUD -fs HFS+J Mount the image: Apple’s installers use a tool called createinstallmedia
Modern macOS versions (Catalina, Big Sur, Monterey, Ventura, Sonoma, and Sequoia) are all 64-bit. Apple dropped 32-bit support starting with macOS Catalina (10.15). Mac Os Download Iso 64 Bit
Many third-party sites offer "pre-made" macOS ISOs. Avoid these whenever possible. They are often modified with malware or unstable drivers that can compromise your data. The Best Way: Create Your Own ISO