Restore Data from a Backup
If you've followed the directions so far, you've tested the basic process of booting from a duplicate and restoring individual files from a versioned backup. But in the event your data suffers serious damage, you will want to restore your duplicate, a versioned backup, or both onto your main hard disk. Read on for tips to help you through this process.
Repair or Erase Your Disk
If your startup disk (or another volume you've backed up) becomes unusable, you should not copy other files onto it while it's in an unstable state. In case of serious trouble, the first thing you should do is start up your computer from another volume (a duplicate, a Mac OS X installation disc, or a bootable disk-utility disc such as Alsoft's DiskWarrior). ...
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