In some instances these files may also be found on the application’s installer disk. If you really don’t want to use an installer, and you know exactly what you’re doing, you should be able to copy the appropriate files from another computer that already has the software installed. And if you’re really nervous you should also backup all your other files as well. Since things sometimes go horribly wrong, you should always make a copy of the installation software before you start. Modern software is often supplied in the form of an installer application that places the new application and its support files onto your hard disk in the appropriate places. Carbonized applications can’t be used in older versions of the Mac OS or where CarbonLib is missing or outdated.These are built into Mac OS X and into the CarbonLib extension that Apple provides for the Classic Mac OS. Programs requiring a 680x0-based floating point unit (FPU) don’t work on a PowerPC-based machine unless you install SoftwareFPU (see below).Ī Carbonized application, which can be used fully in both the Classic Mac OS and in Mac OS X, employs a reduced set of application programming interfaces (APIs) known as Carbon.Modern version of many applications can’t be used on a 680x0-based machine.What you actually get is often determined automatically during installation, although some installers do offer you a choice.

Some Classic applications are designed to work on a PowerPC-based computer, a 680x0-based machine or both, the latter type being known as a fat application. Most Classic applications also work in the Classic environment of Mac OS X, although they can’t exploit the features provided by this modern Unix-based system.

The Macintosh operating systems prior to Mac OS X are commonly known as the Classic Mac OS, whilst the associated applications are called Classic applications. A utility is a special application that deals with unusual tasks or with problems on your computer. An application program, more commonly known as an application, lets you open, modify or create documents that are used in the real world.

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