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Disk Utilities

Mac OS X includes two utilities that you'll commonly use when working with disks: Disk Utility and Disk Copy. The Disk Utility application combines the features of Disk First Aid and Drive Setup from Mac OS 9. Disk Copy is used to mount virtual disks—a popular way to distribute software under Mac OS X.

Disk Copy

Disk Copy (Path: /Applications/Utilities/Disk Copy) works in much the same way as the Disk Copy program used by Apple in OS 8/9. In recent years, Disk Copy has become a common and convenient way to distribute software. Rather than creating an archived folder, developers write their applications to a virtual disk that is loaded into memory when used. This disk appears to the computer as a real disk, and can be manipulated like any other disk. For the end user it is a simple way to work with new applications. A single disk image file can contain applications, support files, and any other data 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 at all. 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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