Repairing a damaged disk, Try these suggestions first | Apple 8500

Repairing a damaged disk

Disks can become damaged by repeated use and handling.

When do you need to repair a disk?

If you see a message reporting that a disk is damaged or unreadable, you may need to repair the disk.

Try these suggestions first

If you can’t start up from a hard disk or you don’t see the hard disk icon on the desktop, try the following:

mIf the hard disk is internal, shut down your Macintosh, wait at least 10 seconds, and then turn it on again.

mIf the hard disk is external, make sure that it is turned on and that its cable is connected firmly; then restart the Macintosh.

mIf the hard disk is your startup disk, start up with a different startup disk. If the hard disk’s icon appears on your desktop, reinstall system software on the hard disk. See “Installing or Reinstalling System Software” later in this chapter.

mCheck the ID numbers of all SCSI equipment connected to your computer. Your computer has two SCSI chains, an internal one and an external one. All devices on the same SCSI chain must have unique ID numbers, but devices on different SCSI chains may use the same SCSI ID number. (For example, you can have a CD-ROM drive with ID number 3 connected to the internal SCSI chain and a tape drive with ID number 3 connected to the external SCSI chain. You cannot have two SCSI devices connected to the external SCSI chain that both use ID number 3.)

On the internal SCSI chain, the computer itself has the ID number 7, and the factory-installed hard disk has the number 0. If your computer came with a CD-ROM drive installed, it is also connected to the internal SCSI chain and has ID number 3.

On the external SCSI chain, SCSI devices are numbered from 0 to 6, or 1 to 6 if you have an additional hard drive installed (its number is 0).

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Apple 8500 manual Repairing a damaged disk, When do you need to repair a disk?, Try these suggestions first

Contents

User’sGuide Apple Computer, Inc Contents Connecting Additional Equipment Getting Help Installing or reinstalling CD-ROM software 125 129145 155 FCC statement Radio and television interference DOC statement Vcci statement CD-ROM drivePage Welcome to Power Macintosh Page Chapter Getting Started Getting Help ChapterPage Getting Started Computer power cord Monitor power cord MonitorMouse Apple PlainTalk Microphone optional Plugging in the computer Installing an expansion card Connecting a monitorConnecting the monitor power cord Place the monitor next to the computer Plug in the monitor power cord Connect the monitor power cord to the monitorOn some monitors, the cord is already attached On some monitors, the cable is already attached Connecting the monitor cableAttach the monitor cable to the monitor Connecting the mouse and keyboard Connecting a keyboard with a built-in cable Connecting a keyboard with a separate cable Turning the computer on Connecting other equipmentTurn on your monitor Chapter Check to see what’s on your screen Hard disk icon Macintosh desktop Problems turning your computer on? What’s next? Learning the basics Slide your mouse along your mouse pad or desk Chapter Menus Reviewing the basicsMenu Icons Window Icons Windows Setting energy-saving options Saving energy with the Energy Saver control panel Accessing a sleeping computer over a network Putting your computer to sleepWaking your computer from sleep Scheduling automatic startup and shutdown Turning the computer off Using the Power keyFollowing dialog box appears on the screen Using the Shut Down command Getting Started Where to find answers Getting Started Page Getting Help Getting answers to your questions Getting answers with the Topics button Macintosh Guide window, click the Topics button Click Setting Options in the list of topics Small window appears with instructions for you to followNow continue with the next section Read and follow the instructions in this window Getting answers with the Index button Macintosh Guide window, click the Index button Read and follow the instructions in the window Getting answers with the Look For button Macintosh Guide window, click the Look For button If you want to close Macintosh Guide, click here Tips for using Macintosh Guide Identifying objects on the screen Main Macintosh Shortcuts window appears Learning useful shortcutsClick one of the category buttons Chapter Connecting Additional Equipment Your computer at a glance Power-on light Green light SpeakerOptional CD-ROM drive Optional Monitor Scsi port ² Power socket Ethernet port Aaui Access covers forMonitor port ADB port Keyboard or a trackball Audio input ports Connecting audio equipment About your computer’s A/V panel¾ S-video input port Video output port Computer’s sound ports accept these 3.5 mm connectors About your computer’s sound ports Connecting most audio equipment Place the audio equipment near the Macintosh Connecting and positioning a microphone Turn on the computer and the audio equipment Turn on the computer Connecting external stereo speakers If the speakers take a dual-plug cable, connect both plugsYour finished connections should look something like this Assemble the speakers and the cable you need Connecting video equipment Video connectors Composite video connectors Connecting video equipment for input to the computer Audio cable with dual RCA connectors plugs at each end Follow the directions that came with the VCR or camera Video connection for input from a VCR Composite video connection for input from a VCR Composite video connection for input from a camera Turn on the computer and the VCR or camera Audio cable with dual RCA connectors plugs at both ends Connecting video equipment for output from the computerAssemble the VCR and cables you need Follow the directions that came with the VCR Video connection for output from the computer Composite video connection for output from the computer Using a television as a monitor Television used as a monitor with an S-video connection Chapter Connecting external Scsi devices Before you connect a device Scsi terminator Connecting a Scsi device Expanding memory Installing internal drives Connecting network cables About Macintosh networking Connecting Additional Equipment Page Installing and Using Application Programs Installing application programs Chapter Working with several programs at a time Finding out which programs are open Switching programsHiding and showing windows on the desktop Backing up your files Using Power Macintosh application programsSpecial memory requirements Shared libraries Using the Optional CD-ROM Drive Inserting a CD-ROM disc Tray opens Ejecting a CD-ROM disc Press the Open/Close button for your CD-ROM driveOpen the tray Take the CD-ROM disc out of the tray Playing audio CDs Working with Photo CDs Sharing a CD-ROM disc over a network Troubleshooting IIpartPage When you have questions If you have trouble Take your time Start over Select Restart from the dialog box that appears Desktop is rebuilt Rebuild your desktop regularlyWhile holding down the Space bar, restart your computer Solutions to common problems Computer is turned on but the screen is dark Computer’s clock keeps time inaccurately Troubleshooting Sad Macintosh icon appears, and the computer won’t start up Hard disk icon does not appear on the desktop Your Macintosh can’t read a floppy disk Icons do not appear correctly on your screenYou can’t eject a floppy disk Chapter Troubleshooting Dialog box with a bomb appears Pointer 8 doesn’t move when you move the mouse Typing on the keyboard produces nothing on the screen Troubleshooting You experience problems using a document from a DOS computer You experience problems using an older Macintosh program Problems using the CD-ROM drive Solutions to CD-ROM problemsCD-ROM drive icon does not appear on screen Tray of your CD-ROM drive won’t open Problems using CD-ROM discs You can’t open a document on a CD-ROM disc Problems using ISO 9660 or High Sierra discs Problems playing audio CDs You are unable to record sound from an audio CD Problems using Photo CDsYour CD-ROM drive will not open Photo CDs If your computer’s performance decreases Solving printer problems Obtaining updated Apple software AppleLink EWorld Chapter CompuServe Internet Apple Computer Higher Education gopher server Internet ftp.support.apple.com Internet ftp.info.apple.comEach time you open a folder, a new Macintosh window opens When do you need to initialize a hard disk? Initializing a hard disk Starting up from a CD-ROM disc Starting up from a floppy diskCD-ROM disc will remain in the CD-ROM drive Turn your computer on Open the Drive Setup icon How to initialize a hard diskList of drives, click the disk you want to initialize Repairing a damaged disk When do you need to repair a disk?Try these suggestions first Disks can become damaged by repeated use and handling How to test a hard disk List of drives, click the disk you want to test How to repair a hard disk or floppy disk Open the Disk First Aid icon Click Repair to begin testing and repairing the disk If Disk First Aid cannot correct the problemClick the icon of the disk you want to test When should you install system software? Installing or reinstalling system softwareWhen should you reinstall system software? Installing system software You use the Drive Setup program to update your hard diskFind and open the Disk First Aid icon List of drives, click your startup disk Easy Install dialog box appears Click OK Doing a clean installation of system software To do a clean installation, follow these steps Click the Install New System Folder button and click OK Hold down Shift-x-K to start the clean installationFollowing dialog box appears It takes a few minutes to complete the installation Click Clean Install Doing a custom installation Replacing special software Choose Custom Install from the pop-up menu Installing or reinstalling CD-ROM software When should you install or reinstall CD-ROM software?Installing or reinstalling CD-ROM software Restart your Macintosh Choose Custom Install from the pop-up menu IIIpart Page Appendix a Health, Safety, and Maintenance Tips Health-related information about computer use Musculoskeletal discomfort Eye fatigue Arranging your office Thighs horizontal Avoiding fatigue What about electromagnetic emissions? Safety instructions Handling your computer equipment Handling the monitor Handling the keyboard Handling floppy disks Handling CD-ROM discs 139 Ejecting a disk Power supplyIf you can’t eject a floppy disk Cleaning your equipment Cleaning the computer caseCleaning the monitor Cleaning the mouse Rotate the rollers to clean all around them Locking and unlocking the mouse Put the ball and the ring back in place To unlock the mouse, follow these steps Appendix B Installing an Expansion Card Expansion card power requirements Card installationDo not completely remove the screws or the back panel Turn off the computer Remove the cover from the computer Power supply Squeeze the sides of the retainer and pull down Lower the retainer Hold the card by its edges to avoid touching the connector Remove the card from its static-proof bag Align the connector end of the card with the expansion slot Replace the retainer Back into place Replace the cover on the computer Tighten the screws on the back panel Upgrading the processor Caps Lock key Clear key Command key Appendix C Special Keys on Your Keyboard Power key Return key Shift key Tab key Control keyDelete key Enter key Typing special characters and symbols Option-c Special key combinations Here are other key combinations you may find usefulTo do this… …press this key combinationPage Index Index Index Authorized service providers error messages troubleshooting Index Index Index Index See Scsi System Backup Disk 1 disk, starting the computer from Index Apple Computer, Inc