Switching to the Mac[c] The Missing Manual

8.7. Disks

Floppy drives disappeared from Macs beginning in 1997and these days, they're disappearing from Windows PCs, too.

If you miss having a floppy drive, you can always buy a USB-based one for your Mac. In the meantime, there are all kinds of other disks you can connect to a Mac these days: FireWire (IEEE 1394) external hard drives, iPods, USB flash drives, and so on.

When you insert any kind of disk, its icon shows up on the right side of the screen; there's no My Computer icon to open when you want to find the inserted disk's icon. Similarly, no icon for a drive appears if there's no disc in it. If you've used only Windows, this behavior may throw you at first.


Note: You can use Mac OS X like Windows if you choose. To open a single window containing icons of all currently inserted disks, choose Go Computer. To complete the illusion that youre running Windows, you can even tell Mac OS X not to put disk icons on the desktop at all. Just choose Finder Preferences General and turn off the three top checkboxesHard disks," "CDs, DVDs, and iPods" and "Connected servers." They'll no longer appear on the desktoponly in your Computer window.

To remove a disk from your Mac, use one of these methods :

8.7.1. Startup Disks

When you turn the Mac on, it hunts for a startup disk that is, a disk containing a copy of Mac OS X. And, as you know, a computer without an operating system is like a machine that's had a lobotomy.

8.7.1.1. Selecting a startup disk

It's perfectly possible to have more than one startup disk simultaneously attached to your Mac. Some veteran Mac fans deliberately create other startup diskson burnable DVDs, for exampleso that they can easily start the Mac up from a backup startup disk, or a different version of the OS.

Figure 8-10. In the Startup Disk pane of System Preferences, the currently selected diskthe one that will be "in force" the next time the machine starts upis always highlighted. You see the Mac OS X version number and the name of the drive it's on, but not its actual nameuntil you point to an icon without clicking.

Only one System folder can be operational at a time, though. So how does the Mac know which to use as its startup disk? You make your selection in the Startup Disk pane of System Preferences (Figure 8-10). Use it to specify which disk you want the Mac to start up from the next time you turn it on.

8.7.2. Erasing, Formatting, and Initializing

When you want to erase a disk (such as a CD-RW disc) in Mac OS X, use Disk Utility, which is located in your Applications Utilities folder.

You can use this program to erase, repair, or subdivide ( partition ) a hard drive, or any other kind of disk.

To erase a CD-RW or DVD-RW disc, open Disk Utility, click the Erase tab, click the name of the CD (in the left-side list), and click the Erase button.

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