Our website provided a free download of Apple Disk First Aid 8.6 for Mac. The software lies within System Tools, more precisely General.
From the developer:
Without your hard drive running smoothly, you're certain to run into problems no matter what you use your Mac for. To the rescue comes Apple's Disk First Aid, which has helped many a Mac user figure out and repair those minor problems that can occur on most Macs over time. This handy utility is no doubt installed on your Mac already
You may want to check out more software for Mac, such as OS X Recovery Disk Assistant, Apple Lion Recovery Update or Disk Doctors Photo Recovery, which might be related to Apple Disk First Aid.
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