Your data may be lost when the hard drive containing the data has a mechanical malfunction. As drives are used, their parts begin to wear out. Drive manufacturers have begun including internal diagnostic routines in their drives to help determine if a drive is exceeding its operating tolerances, but unless you have software to access these routines, you will not have any warning of the impending drive malfunction.
With DiskWarrior installed, you can enable DiskWarrior's hardware monitoring capability, which uses a drive's built-in S.M.A.R.T. technology to monitor drive hardware. If the diagnostics indicate the potential for a malfunction, DiskWarrior provides you with a warning, using the notification method you have specified. This warning gives you the chance to back up any data on the drive before it fails completely, saving you from having to rely upon an expensive data recovery facility to retrieve your data.
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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.
