What To Do With Old Dmg Files After Installing

What is a DMG file? DMG files are files that are treated like actual hard disks by the Macintosh OS X operating system. These files can be created with Disk Copy, burned to a CD or even mounted as a normal volume on Macintosh computers. They often contain raw blocks of data that are usually compressed for easier file management. After installing DMG Extractor, all you have to do is double-click your DMG file to open it up. You can browse the files right in the DMG Extractor window if you just want to see what’s inside the DMG file.

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This chapter is from the book 

Mac OS X Help Line, Tiger Edition

This chapter is from the book

This chapter is from the book 

Chances are, you were using Mac OS X even before you bought this book, since few Macs sold in the past few years can boot into anything else. And even if you own an older Mac, the fact that you're reading this volume means you've probably already installed Mac OS X on it!

For that reason, I provided an overview of Mac OS X (in Chapter 2) before this description of how to install the operating system, believing that most of you are already up and running in Mac OS X. Even if that's the case, though, you may someday be called upon to install Mac OS X on an older Mac that's still running Mac OS 9. Or, even more important, you may need to re-install Mac OS X (to fix problems). Finally, as new versions of Mac OS X are released, you will need to upgrade your OS. For all of these occasions, this chapter explains what needs to be done (and why) and offers solutions to a variety of potential problems.

I start off by providing background information on installing Mac OS X for the first time, moving on to give more general information about installing, reinstalling, and restoring Mac OS X software. You'll also learn about upgrading Mac OS X and find recommendations about how best to back up Mac OS X.

In This Chapter

What You Need to Install and Run Mac OS X • 125

Which Mac models can run Mac OS X?
How much memory do you need?
How much hard-drive space do you need?
Will you be installing Mac OS 9?
Other requirements

Installing or Reinstalling Mac OS X • 128

The Mac OS X Install disc(s)
Startup from the Mac OS X Install disc
The Installer menu
The File menu
The Utilities menu
The Window menu
Introduction
License
Select a Destination
Installation Type, Install, and Finish Up

Restoring Mac OS Software • 148

What About Mac OS 9? • 149

Getting Mac OS 9 onto your Mac OS X Mac