As the Disk Utility window will open, you can view the Macintosh HD and the available partitions (or the external sources). Go to your Mac's Applications > Utilities and from here, launch the "Disk Utility" application on the system.Ģ. To do this, you can also take the assistance of Mac's Disk Utility.ġ. Needless to say, this will erase all the existing data from the disk and will also get rid of any malicious entity from it. If the FSCK command is not able to fix the Disk Utility first aid failed problem, then you can also format the disk. That's it! Once the Macintosh HD is fixed, you can enter the "reboot" command to restart your system in normal mode. If not, then enter the "fsck –fy" command a few times till you get this expected message.ĥ. If everything goes well, then you will get the "The volume Macintosh HD appears to be OK" prompt.
To do this, you need to type the command "/sbin/mount -uw /" and press enter.Ĥ. Since the disk would be read-only in the single-user mode, you need to change that first. This is a disk repair and diagnostic command that will scan the disk and would try to fix it automatically.ģ. Once the terminal window of the single user mode is launched, you can just type the command "/sbin/fsck –fy". This will automatically boot it in a single user mode.Ģ. Restart your Mac and hold the Command + S keys for a few seconds while it boots. Later, you can follow these basic steps to fix Disk Utility can't repair the disk error.ġ. Though, to run it, you need to first boot your system in a single user mode. Fix 1: Use the FSCK commandįSCK is an inbuilt command in Mac that can help us manually repair a disk. The following are some of the major solutions to this. Great! Once you have taken a backup of your important files, you can easily fix the Disk Utility first aid failed error.
#Hard disk repair for mac os x free#
Just make sure that the external drive has enough free storage in advance. Wait for a while as Time Machine would take a dedicated backup of your disk on the external drive. Now, just select the backup disk and start the process. In case you don't get this prompt, then you can manually launch the Time Machine tool from Mac's System Preferences.ģ. Just select the "Use as Backup Disk" feature to proceed.Ģ. As soon as it gets detected it, Time Machine will automatically display the following prompt. Firstly, connect your external drive to your Mac using a working cable. Besides that, you can also take the assistance of a Time Machine for a smoother process.ġ. To do this, you can use an external hard drive and simply copy-and-paste your files on it. Therefore, if you don't want to suffer from an unwanted loss of your files, then consider taking a dedicated backup. Mostly, the error depicts that the disk is not stable and can get corrupt anytime. When we get the Disk Utility can't repair this disk prompt, it is recommended to take a backup of our data first. Here's a stepwise solution to fix Disk Utility first aid failed issue like a pro. In the end, you can restore the backup data and start using your Mac the usual way. Once it is done, you can reformat the disk or fix the root issue behind it. Firstly, you need to back up the existing data on the disk as it might stop functioning anytime. Ideally, it doesn't take a lot of effort to fix the Disk Utility can't repair disk issue. Steps to Fix the "Disk Utility Can't Repair This Disk" Error
Ideally, Disk Utility can help you create or merge partitions, erase a hard drive, unmount it, and even repair it. What Is Disk Utility?ĭisk Utility is an inbuilt utility application in Mac that helps us manage its internal or external hard drive. Part 4: Tips for Using Disk Utility and Mac Hard Driveīefore we get into the details and learn ways to fix Disk Utility that can't repair the disk, let's quickly know what Disk Utility is all about and the common reasons for this error.
#Hard disk repair for mac os x how to#
Part 3: How to Recover Data After Mac Disk Repair?.Part 2: Steps to Fix the "Disk Utility Can't Repair This Disk" Error.Part 1: Why Disk Utility Fails to Repair a Disk?.
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