Rebuild Your Startup Disk
DiskWarrior ships on a DVD that will start up in Mac OS X on a Mac with a G4 867 MHz or better processor (such as a G5 or Intel) and 512 MB of RAM.
Once started from the DiskWarrior DVD, DiskWarrior can run from the DVD to eliminate all damage to any HFS (Mac OS Standard) and HFS Plus (Mac OS Extended) disk directories, including your normal startup disk.
DiskWarrior can also repair RAID volumes, journaled disks, case-sensitive disks, FileVaults and iPods.
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10.6 Snow Leopard Support (New!)
Winner Macworld 23rd Annual Editors' Choice Award
In the past decade, no other utility has come close to challenging its prowess at repairing disk-directory problems.
Macworld Magazine
Throughout many years, this program has showed its value as a data and bacon saver. This may be one of the few programs that every Mac user should own.
John Gruber, Daring Fireball
Thanks to DiskWarrior, I lost nothing. If you don’t own DiskWarrior, buy it immediately.
IT-Enquirer Editor's Choice
I’ve had at least 2 disks over the years that I managed to bring back to life using DiskWarrior, where other tools failed.
Bob "Dr. Mac" Levitus (Houston Chronicle)
Alsoft’s DiskWarrior 4 just saved my bacon again. When I restarted, my Mac was back to normal.

