Apple Macintosh 6500 - Manual (Page 159)

3 Click the icon of the disk you want to test.
Disk icons appear in a box at the top of the Disk First Aid window.
4 Click Repair to begin testing and repairing the disk.
You can’t repair the startup disk or the disk that contains the Disk First Aid
application, but you can test these disks by clicking Verify. If the application
reveals a problem with either of these disks, start up the computer from
another disk so that you can repair the damaged disk.
If you want to test and repair another disk, click its icon and then
click Repair.
5 When testing and repair are done, choose Quit from the File menu.
159 Troubleshooting