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Neverformat your hard disk. Never format a floppy or Zip disk that alreadyhas information on it. If you do format such a disk, the information on thedisk will be permanently erased, and there will be no way to undo that mistake. It s easy to tell if a magnetic disk is already formatted or not. When you attemptto view the contents of a disk that hasn t been formatted, you ll see an errormessage similar to the one shown in Figure 21-5. Figure 21-5:Error message indicatingan unformatted floppy or Zip disk in the driveThe first three options are largely informative, and there s rarely any reason tochange those. If in doubt, leave them alone. The Volume Label option is yoursto do with as you please. You can type a brief label there (up to 11 characters). That label will appear next to the drive s icon in My Computer whenever youinsert the disk into the drive. Select the Quick Format option only if you re reformatting (erasing) a disk thatalready contains data. The Enable Compress option will be available only oncertain types of disks and only if you choose NTFS from the File System optionnear the top of the dialog box. The Create an MS-DOS startup disk option, avail- able only on floppies, will create an Emergency boot disk. Such a disk allowsan expert to start the computer from the floppy disk drive even if the hard diskis damaged. If you select that option, you won t be able to put anything else onthe floppy disk. After choosing your options (or leaving them all alone, as is the more likelyscenario), click the Start button. You may see a repeat of the warnings I vebeen giving you (that the entire disk will be erased). Assuming you understandthat and are ready to proceed, click the OK button. Then just wait as Windowsformats the disk. When formatting is done, you ll see a message to that effect. Click the OK button in that message box. Then click the Close button in theFormat dialog box. This time, when you double-click the drive s icon, you ll see an empty Explorer window on your screen. (It s empty because the disk isformatted but still blank.) You can move or copy a file (or files) to the disk byusing techniques described in the next chapter.
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Viewing the Contents of Floppy and Zip DisksTo use a floppy disk or Zip disk, you first need to insert one into the floppy orZip drive, respectively, of your computer. Make sure that you insert the diskcorrectly, as indicated by the arrow in Figure 21-4. Figure 21-4:Always insert floppy and Zip disks top-side up, with the sliding door first. After you ve inserted the disk into its drive, wait a moment to see if a windowopens on your screen automatically. If such a window does open, it will beWindows Explorer. If that happens, skip the paragraph and steps that follow. If nothing happens after you insert the disk (as is usually the case with floppydisks), follow these steps to view the contents of the floppy disk: 1.Open your My Computer folder (click the Start button and chooseMy Computer). 2.Double-click the icon that represents the drive into which you justinserted the disk. Windows Explorer will open and show you the contents of the disk. Foldersand files will be displayed using the standard icons manila file foldericonsfor folders, other icons for files. If the disk is empty, the main pane inWindowsExplorer will be empty. If the disk hasn t been formattedyet, you llneed to format it before you can use it at all. Formatting a DiskMagnetic disks often need to be formatted before you can use them for thefirst time. That s not to say you need to format every disk. Nor do you needtoformat a disk each time to you intend to use it. To the contrary, you formatunformatteddisks only (not preformatted disks, nor disks that already containfiles). And even if you do need to format a disk, you need only do that once. TopBottomWrite-protect tabChapter
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Figure 21-2:Some examples of icons that represent disk drives that support removable media (under the second heading) If you double-click the icon for a drive that supports removable media, and nodisk is in that drive at the moment, you ll just get an error message similar tothe one shown in Figure 21-3. There s nothing to do there but click the Cancelbutton. However, if you insert a disk into the drive and double-click the drive sicon, Windows Explorer will show you the contents of that disk. As always, folders on the disk (if any) will be represented by icons that look like manilafile folders. Files on the disk will be represented by other icons. Figure 21-3:Error message that appears when you attempt to read the contents of an empty disk driveUsing Floppy Disks and Zip DisksJust about every desktop PC has a floppy disk drive. Relatively few have Zipdrives (although anybody can purchase a Zip drive and connect it to a com- puter). Floppies and Zip disks are similar in that they re both magnetic media. That is, they use magnetism to store data. The only real difference betweenafloppy disk and a Zip disk is in the capacity of the disks. Floppies can holdvery little information. A single Zip disk can store the equivalent of anywherefrom 100 to 1,000 floppy disks.
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Why Use Removable Disks? When it comes to using a computer, in general, the idea is to use your harddisk to store Windows, all your installed programs, and all your documents. Inother words, the idea is to use your hard disk to store everything. I supposethis might lead one to wonder why there s a need to have removable disks. Ingeneral, you use removable disks for distribution and backups only, as summa- rized here: .Distribution:To copy files to send somebody through regular mail orto copy files from one computer to another when e-mail or a networktransfer isn t possible. CD-R and DVD-R disks can be used to makedisks that play in regular (noncomputer) stereos and DVD players. .Backup:To make extra copies of important files on your hard disk, incase a serious hard disk crash (or incompetent file deleting) destroysthe original files. Exactly how you use removable disks depends on what type of disk you reusing. But we can break it down into two basic categories: .Magnetic media:Floppy disks, Zip disks, Jaz disks (and even yourhard drive) are examples of magnetic media, in that they use magnetism as the means of storing data. (You hard disk is amagneticdisk, too.) .Laser media:CDs and DVDs are laser media, in that they use laserlight as the means of storing and retrieving data. The techniques for using the two different media types are the same in someways but different in other ways. So we ll look at each type of media in the sec- tions that follow. Since Zip disks and Jaz disks are virtually the same thing, I ll lump themtogether for the rest of this chapter and just refer to both types as Zip disks. Each disk drive in your computer has an icon in My Computer. In yourMyComputer folder, drives that support removable disks are listed underDriveswith removable media, as in the example shown in Figure 21-2. When itcomesto disk drives, not all computers are created equally. If your computerhappensto have a CD drive, a DVD drive, a floppy drive, and a Zip drive, yourMy Computer folder might show icons similar to those shown in Figure21-2. (You can open My Computer by clicking the Start button and choosingMy Computer.) Like your hard disk, which is named C:, disk drives that support removablemedia have one-letter names. For example, your floppy disk drive is named A:. A second floppy (which is rare) would be B:. Additional drives could be namedD:, E:, F:, and so forth, up to Z:.
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Figure 21-1:Relative storage capacities of different types of disksTable 21-1 lists the capacities of various types of removable media in terms ofbytes, the usual method for specifying how much information a disk can hold. (Recall that a byte is the amount of storage space required to store one char- acter, like the letter aor the letter q.) Table 21-1Capacities of Various Types of Removable DisksNameCapacityBytesBytes (English) DVD4.7GB to 9.4GB4,700,000,000 to 9,400,000,0004.7 billion to 9.4 billionCD650MB to 700MB650,000,000 to 700,000,000650 million to 700millionZip/Jaz100MB to 1,000MB100,000,000 to 1,000,000,000100 million to 1 billionFloppy1.4MB1,400,0001.4 millionHard diskDVDCDFloppy478Part
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2121CHAPTERUsingFloppies, CDs, and DVDsIn addition to your computer s hard disk, you can usefiles stored on removable media. The disk drives forremovable media are plainly visible on the front of yourcomputer (or perhaps the sides, if it s a notebook com- puter). These are called removable media because youcan put disks into the drives and remove them from thedrives. You may already be familiar with some types of remov- able media, such as floppy disks, CDs, and DVDs. If not, don t worry about it. You will be by the time you finishthis chapter. One of the first things you need to understand aboutremovable media is that it s virtually impossible to copy your entire hard disk to a single floppy disk orCD.That s because the capacity of removable disksisgenerally much less than the capacity of your com- puter s hard disk. For example, if you envision various types of disks as filing cabinets, your hard drive would be several rows of filing cabinets, as in Figure 21-1. A DVD would be agood-sized filing cabinet. A CD would be a decent-sizedcabinet. A floppy disk, whose capacity is so limited, wouldn t even count as a whole filing cabinet. Its capacity is more along the lines of one manila-filefolderinside a cabinet. Hence, the floppy in Figure 21-1doesn t even get a whole filing cabinet as its picture. …In This ChapterWhy use removabledisks? Using floppy disks disksUsing CDs and DVDsChanging the defaultbehavior of CDs DVDs …
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