In addition to identifying and fixing permissions problems, Disk Utility can verify and repair drives.
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These processes might take several minutes, but you can watch as Disk Utility lists all the files on your computer for which the current permissions don't match what they should be.Īfter you install software, you might want to use Disk Utility to repair file permissions-sometimes software installers make changes to file ownership or permissions that result in slower system performance or even failures by other applications. Repair, on the other hand, finds and fixes any issues. Verifying permissions displays any anomalies in your file system, but does not fix them. Select the drive you want to examine and then click the First Aid button (see Figure 31.3). To do so, open Disk Utility from the Utilities folder. If you begin to see system errors related to denied permissions or failures to access needed components, you can run the First Aid component of Disk Utility to verify or repair file permissions. (Some sounds are normal-drastic change is worrisome!) You don't always get these audible warning signs, but if you do hear something unusual, it is time to back up your data and to run hard disk checks.
Experienced computer users know to be concerned if their computer begins clicking or whining when saving or reading files because these are signs of a failing drive. Hard drives are moving parts, and the sound they make can change or grow louder as they wear. One of the best tools for monitoring your hard drive is your hearing.
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