Disk Utility can find and repair errors related to the formatting and directory structure of a Mac disk. Errors can lead to unexpected behavior when using your Mac, and significant errors might even prevent your Mac from starting up completely.
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Disk First Aid 8.6 file size: 584.57 KB Disk First Aid is an easy to use utility that verifies and repairs some problems that may occur on your hard disk drive. Poor Disk Utility. It seems fated to remain one of Mac OS X’s most underappreciated utilities. If you’ve even launched it at all, chances are you haven’t gone beyond using its First Aid.
Before proceeding, make sure that you have a current backup of your Mac, in case you need to recover damaged files or Disk Utility finds errors that it can't repair.
Open Disk Utility
Start up from macOS Recovery, then select Disk Utility from the Utilities window. Click Continue.
If you're not repairing the disk your Mac started up from, you don't need to start up from macOS Recovery: just open Disk Utility from the Utilities folder of your Applications folder.
If you're not repairing the disk your Mac started up from, you don't need to start up from macOS Recovery: just open Disk Utility from the Utilities folder of your Applications folder.
Locate your disk in Disk Utility
Choose View > Show All Devices (if available) from the menu bar or toolbar in Disk Utility.
The sidebar in Disk Utility should now show each available disk or other storage device, beginning with your startup disk. And beneath each disk you should see any containers and volumes on that disk. Don't see your disk?
In this example, the startup disk (APPLE HDD) has one container and two volumes (Macintosh HD, Macintosh HD - Data). Your disk might not have a container, and it might have a different number of volumes.
Repair volumes, then containers, then disks
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For each disk that you're repairing, start by selecting the last volume on that disk, then click the First Aid button or tab.
In this example, the last volume on the disk is Macintosh HD - Data.
Click Run to begin checking the selected volume for errors.
- If there is no Run button, click the Repair Disk button instead.
- If the button is dimmed and you can't click it, skip this step for the item you selected, and continue to the next item.
- If you're asked for a password to unlock the disk, enter your administrator password.
After Disk Utility is done checking the volume, select the next item above it in the sidebar, then run First Aid again. Keep moving up the list, running First Aid for each volume on the disk, then each container on the disk, then finally the disk itself.
In this example, the repair order is Macintosh HD - Data, then Macintosh HD, then Container disk2, then APPLE HDD.
If Disk Utility found errors that it can't repair
If Disk Utility found errors that it could not repair, use Disk Utility to erase (format) your disk.
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If your disk doesn't appear in Disk Utility
If Disk Utility can't see your disk, it also can't see any containers or volumes on that disk. In that case, follow these steps:
- Shut down your Mac, then unplug all nonessential devices from your Mac.
- If you're repairing an external drive, make sure that it's connected directly to your Mac using a cable that you know is good. Then turn the drive off and back on.
- If your disk still doesn't appear in Disk Utility, your disk or Mac might need service. If you need help, please contact Apple Support.
You may also see one of the following errors when you install your Norton product for Mac:
![Aid Aid](/uploads/1/2/9/2/129216388/486877549.jpg)
- 'Did not find the expected base package for this product. Please contact Support.'
- 'We were unable to download the support packages. Please check your Internet connection and try again.'
This problem can occur if the Norton Installer fails to connect to the Internet. Launch your browser and make sure that you can access any website to check the Internet connectivity on your Mac.
This problem may also occur if access to Downloads folder is blocked for Norton installer on macOS 10.15.x Catalina or later. During Norton installation, you are prompted to allow access to the Downloads folder.
To fix this problem, allow access to the Download folder for Norton installer in Security & Privacy preferences.
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Configure Security & Privacy Preferences
- Run RemoveNortonMacFiles tool and remove Norton products.
- Delete any Norton installer or directory in Downloads directory.
- Download Norton installer, launch and quit. (If the above alert to access Downloads folder does not appear).
- Go to System Preferences > Security & Privacy.
- In the Security & Privacy window, on the Privacy tab, select Files and Folders in the left pane.If the settings are locked, click the lock icon at the bottom of the window and then type your administrator password to unlock.
- In the Security & Privacy window, select the Downloads Folder for Norton installer in the right pane.
- Exit the preferences window.
- Re-launch the Norton Installer.
Run First Aid on Startup disk
- On the Apple menu bar, click Go > Utilities.
- In the Utilities window, double-click Disk Utility.
- In the Disk Utility window, in the left-pane, select the Startup disk Macintosh HD.Only a Startup disk can be verified and repaired for file permission issues. Do not select the core storage disk, it does not display the number of files and folders at the bottom of the window.
- In the Disk Utility window, on the top menu bar, click First Aid and then click Run.If you are on macOS 10.14.x or earlier, click Repair Disk permissions.
- Follow the on-screen instructions.Depending on the number of files that are checked for permissions, repairing disk permissions process may take some time.
- When the permissions repair completes, exit all programs and restart your Mac.
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Install Norton
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- Sign in to your account.
- Type in your email address and password for Norton, and click Sign In.
- In the My Norton portal, click Download.
- In the Get Started page, click Agree & Download.
- When the download finishes, double-click the file that you downloaded to launch the Norton installer.
- In the Norton installer window, select I want to join Norton Community Watch, and click Install to start the installation.
- When you see a prompt for Install Helper tool, type your administrator password and then click Install Helper.
- When prompted, in the Norton installation window, click Restart.
- After restarting your Mac, in the Norton installation window that appears, click Open Now to open System Preferences.
- In the Security & Privacy preferences window, on the General tab, click the lock icon at the bottom, type your administrator password and click Unlock.
- Next to System software from application Norton was blocked from loading, click Allow. Exit the System Preferences window.
- In the Norton installation window, click Continue.
- In the Norton Installation window, click Open to go to the Security & Privacy settings.To complete the Norton installation on macOS 10.15.x or later, you need to allow Full Disk access to Norton.
- In the Security & Privacy preferences window, on the Privacy tab, click the lock icon at the bottom, type your administrator password and click Unlock.
- In the left pane, select Full Disk Access, and then check Norton System Extension in the right pane. Exit the System Preferences window.
- In the Installation Successful window, click Restart.You must restart your computer to complete the installation process.
- In the Norton installation window, click Next, and then click Complete.
- If prompted to activate, type your email address and password to sign in to Norton. From the list of available licenses in your account, select your license and click Next.Norton installation is now complete.