Mac OS X 10.6: If a disk can’t be repaired

This article has been archived and is no longer updated by Apple.
If a disk can’t be repaired

If Mac OS X can’t repair a disk, back up as much of your data as possible, reformat your disk by partitioning it, and then restore your backed up data.

Alternatives for backing up your computer
Partitioning a disk

If you continue to have problems with your disk, it may be physically damaged and need to be replaced. See an Apple Authorized Service Provider for more information.