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What to Do:

Using Disk First Aid

Start by making sure you have the latest version of Disk First Aid. Check Apple's Web site for the latest version. At the very least, use a version no older than the one that came with the version of the Mac OS on your startup drive.

Getting Started
  1. Before you launch Disk First Aid... Although Disk First Aid can always verify a disk (that is, check for problems without making any repairs), repairing a disk requires that certain preconditions be met. In particular, Disk First Aid cannot repair a write-protected disk (including CD-ROMs). It also cannot make repairs when there are any other open files.

    Figure F10-1. Disk First Aid.

    Figure F10-2. This message will generally appear when you select to "Repair" a disk with Disk First Aid. Click Continue if you want to proceed with the repair attempt.

    Current versions of Disk First Aid can repair the startup disk and/or the disk from which Disk First Aid was launched. Older versions of Disk First Aid could not repair such disks. And it seems to work well. Still, it is recommended to start up from a disk other than the one you want to repair; this allows Disk First Aid to more reliably verify and repair your disk. Thus, to save time, before you even launch Disk First Aid:

    1. Restart your Macintosh from a bootable CD-ROM (such as the Mac OS system software disk), floppy disk (such as a Disk Tools disk) or secondary hard drive volume or removable cartridge. This may be a requirement, rather than an option, if a problem with your startup drive prevents you from starting up from it.

    2. Make sure any floppy disks or removable cartridges that you want to repair are not locked.

    3. Do not open any other applications prior to launching Disk First Aid. Ideally, also turn off File Sharing.

    You can choose to bypass these steps for now and just verify or attempt to repair a disk. However, if a problem is found, and the repair attempt is unsuccessful, you will probably have to make these adjustments and start over.

  2. Launch Disk First Aid If you ignored Step 1, you may get warning messages concerning the matters just described. It may offer to close all open applications. Choose OK. Eventually, you will get to Disk First Aid's window, where a brief set of instructions is displayed. If you have not read them yet, do so. You are now ready to begin.



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