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A DMG (Disk Image) file is a type of file used by macOS to distribute software, including operating system installations. It's essentially a virtual disk image that contains the installation files for macOS Catalina. When you download a DMG file, you can mount it as a virtual disk on your Mac, allowing you to access the installation files and perform a clean installation of the operating system.
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A DMG (Disk Image) file is a type of file used by macOS to distribute software, including operating system installations. It's essentially a virtual disk image that contains the installation files for macOS Catalina. When you download a DMG file, you can mount it as a virtual disk on your Mac, allowing you to access the installation files and perform a clean installation of the operating system.
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