If you are on Windows and need to build a physical bootable USB drive for a real Mac: Download and install a tool like or BalenaEtcher . Insert a USB flash drive (minimum 16 GB).
hdiutil create -o /tmp/Catalina -size 8500m -volname Catalina -fs HFS+J Use code with caution. Download Macos Catalina 10.15.7 Iso File --39-LINK--39-
Format the drive and use the "Write Image" feature to flash the Catalina file directly to the USB drive. Conclusion If you are on Windows and need to
Before beginning the process, ensure your environment meets these exact requirements: .iso (ISO 9660 standard) File Size: Approximately 8.2 GB to 8.7 GB Architecture: 64-bit Intel (x86_64) Download Macos Catalina 10.15.7 Iso File --39-LINK--39-