When the scan is complete, you can review any of the permissions issues it found in the window in the middle of the Disk Utility window. It should take a few minutes to perform the scan, and if you have the Show details button checked, you'll see any irregularities as they're found during the scan. Disk Utility will scan your hard drive, looking for permissions that are out of whack. With your hard drive selected, click the Verify Disk Permissions button. Next, click on your hard drive from the left panel of the Disk Utility window.

To launch Disk Utility, search for it via Spotlight or navigate your way to it via this trail: Macintosh HD > Applications > Utilities > Disk Utility If the permissions differ, Disk Utility reports the difference (and corrects them if you use the Repair feature). bom files in /Library/Receipts/ and compares its list to the actual permissions on each file listed.

In Mac OS X v10.5 or earlier, when you verify or repair disk permissions, Disk Utility reviews each of the. A quick and easy fix is using the built-in Disk Utility to repair your permissions. Over time, these permissions can get changed, resulting in your Mac lagging, freezing, or crashing. Each of those '.bom' files contains a list of the files installed by that package, and the proper permissions for each file. These files don't take up much disk space and you shouldn't put them in the Trash. Each time something is installed from a package file, a 'Bill of Materials' file (whose filename extension is '.bom') is stored in the package's receipt file, which is kept in /Library/Receipts/ in Mac OS X v10.5 and earlier. In Apple's words: Many things you install in Mac OS X are installed from package files (whose filename extension is '.pkg'). When you install an app on your Mac, the piece of software arrives as part of a package of files, including permissions that tell OS X which users can do what things with specific files. In the meantime, I'm going perform a quick check to make sure my disk permissions are neat and orderly. Now, I could undertake a thorough cleaning as outlined in a previous post, but I'll save that for another day. Things have cooled considerably this week, but my MacBook Pro still feels sluggish. I know I was operating at a slower pace because of the heat and humidity, and the lack of AC in my house. I thought my MacBook Pro was running slow last week because of the heatwave we experienced on the East Coast.

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