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Disk Copy

The next application we examine is Disk Copy (path: /Applications/Utilities/Disk Copy). In recent years, Disk Copy has become a common and convenient way to distribute software. Instead of creating an archived folder, developers write their applications to a virtual disk that’s loaded into memory when used. This disk image file appears to the computer as a real disk and can be manipulated like any other disk. For the end user, it’s a simple way to work with new applications, as you saw in Hour 4, “Installing New Applications.”

A single disk image file can contain applications, support files, and any other data that a program might need—and it never needs to be decompressed. In fact, many applications can actually run directly from disk images, without needing to be copied to your hard drive. Disk Copy even has built-in CD-burning capabilities to make turning a disk image into a real CD a matter of a few clicks.


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