Refer to this chapter when you need to install or reinstall the system software on your PowerBook Duo.

Appendix A

Installing System Software

System software is the set of programs and other files that your computer uses to start itself up, keep track of your files, and run the application programs you use. When you turn on your computer, it looks for a disk that contains the system software. System software is always in a folder called the System Folder.

Any disk that contains a correct version of system software is a startup disk. The startup disk is usually the hard disk that’s inside your computer, though another hard disk or a floppy disk can also be a startup disk.

If your computer cannot find a startup disk, it displays this icon in the middle of the screen:

If you see that icon, you may need to install or reinstall system software on your computer’s internal hard disk. You can also attach your computer to an external hard disk that contains the system software.

If your hard disk already has system software on it and you see that icon: Your hard disk or system software may be damaged, or there may be problems with SCSI devices attached to your computer. (See Chapter 9 for more information on SCSI devices.) You may need to reinstall the system software. See the section on reinstalling system software later in this appendix for instructions.

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Apple 280C manual Appendix a Installing System Software
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280C, 280 specifications

The Apple 280 and 280C are notable models in Apple's lineup that showcase the company's commitment to innovation and design. Launched as successors to earlier models, these computers were designed to cater to both professional and casual users, with features tailored for productivity, creativity, and seamless user experience.

One of the standout characteristics of the Apple 280 is its sleek and elegant design, which combines aesthetics with functionality. The lightweight chassis makes it easy to transport, appealing to users who are on the go. The display technology utilized in the Apple 280 models set a precedent for visual clarity and vibrancy, allowing users to experience richer colors and sharper images. The 280C model further enhanced this experience with a higher resolution, leading to more precise visuals that are perfect for graphic design and multimedia applications.

Under the hood, the Apple 280 and 280C are powered by robust processors that provide ample performance for demanding tasks. Multitasking is made smooth with sufficient RAM, enabling users to run multiple applications without sacrificing speed or efficiency. This level of performance is particularly advantageous for professionals in fields such as video editing, software development, and data analysis.

In terms of connectivity, the Apple 280 series is equipped with a range of ports that ensure compatibility with various peripherals, whether for personal use or professional setups. The inclusion of USB and Thunderbolt ports allows users to connect high-speed devices seamlessly, enhancing the overall productivity of the system.

Another hallmark of the Apple 280 series is the integration of advanced technologies that enhance user interaction. Features such as high-fidelity sound systems and responsive trackpads provide immersive experiences, whether users are listening to music, engaging in video calls, or navigating through applications.

Security also played a significant role in the design of the Apple 280 and 280C. These models incorporate the latest encryption technologies and secure boot processes, ensuring that user data remains protected against unauthorized access.

Overall, the Apple 280 and 280C stand as a testament to Apple's dedication to innovation, merging cutting-edge technology with user-friendly features to create devices that cater to a wide range of users. With a blend of powerful performance, elegant design, and advanced capabilities, these models have left a lasting impact on the computing landscape and continue to be relevant choices for many today.
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