Convert to standard ISO/CDR format:
Apple distributes macOS via the or Software Update as an .app bundle, not as an ISO. The official way to create a bootable installer is using a USB drive and the createinstallmedia command. Mac Os Download Iso 64 Bit
hdiutil create -o /tmp/Sequoia -size 16G -layout SPUD -fs HFS+J Mount the image: Convert to standard ISO/CDR format: Apple distributes macOS
Always download installers directly from Apple to ensure you get a clean, unmodified 64-bit version of macOS. Mac Os Download Iso 64 Bit
All macOS versions from OS X 10.7 Lion (2011) through the latest macOS Sonoma/Ventura are exclusively 64-bit. Apple dropped 32-bit kernel support entirely starting with OS X 10.8 Mountain Lion. Applications must be 64-bit as of macOS Catalina (10.15).