Apple also offers Shift-Command-Option-R, which installs the version of OS X or macOS with which your computer shipped, or the next oldest compatible system still available for download. Restart your Mac, and press Command + R, while it's restarting. Select Disk Utility from the macOS Utilities menu. Once Disk Utility has loaded, choose the disk you wish to repair - the default name for your system partition is generally 'Macintosh HD', and choose 'Repair Disk'.
Summary: What to do when Disk Utility or macOS can't repair this disk? You can check out the solutions in this post, or you can easily recover lost data from this corrupted drive with iBoysoft Data Recovery for Mac.
When a disk is not working properly on a Mac, most users would go to Disk Utility and run First Aid to repair this disk. However, the error message 'Disk Utility can't repair this disk' error usually appears when First Aid fails to repair this disk. Though frustrating, but it doesn't mean you will necessarily lose all files. In this article, we will give you effective solutions to fix 'Disk Utility can't repair this disk' issue, especially when you are facing the issue that Disk Utility can't repair external hard drive, or when Disk Utility can't repair Macintosh HD on Mac.
Help! Disk Utility can't repair this disk
You might be experiencing the same or similar situation as the user below.
I am in the midst of trouble where Disk Utility is failing to repair the drive. It gives me message 'Error: Disk Utility can't repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files'. Now, what should I do to fix this error without losing data on my drive?
'Disk Utility can't repair this disk' is one of the messages you will receive when First Aid failed. Sometimes, it would be followed up with these error messages:
What can you do in these situations to fix this issue without data loss? Keep reading.
Run First Aid to repair this disk again
One of the most tried and tested solution is to repair this disk one more time. To do First Aid again, follow these steps.
1. Go to Launchpad, find Other, and then launch Disk Utility.
2. Choose View and choose Show All Devices at the upper left of this app.
3. Select the disk or volume you want to repair in the left sidebar, and then click First Aid at the top.
4. Click Run to check and repair for disk errors.
If Disk Utility can't repair your disk still, or you receive a report that the First Aid process has stopped or failed, and it's asking for backing up and reformatting, you'd better firstly follow its suggestion to back up files on that disk to avoid further data loss.
How to back up or recover lost data when Disk can't repair this disk?Method 1: Back up with Time Machine
There is a built-in tool on your Mac called Time Machine which can help you back up your files efficiently in this case. Here is how:
1. Connect an external storage device with enough free space to your Mac.
2. A notification will pop up and ask if you want to use this device to back up with Time Machine. Click on Use as Backup Disk and follow its on-screen instructions. Go to learn more about backing up your Mac with Time Machine.
Method 2: Recover lost data from the disk that Disk Utility can't repair
If you don't have an extra external drive in hand or you can't back up files from that disk with Time Machine for some reasons, alternatively, you can recover files with reliable data recovery software, likeiBoysoft Data Recovery for Mac.
iBoysoft Data Recovery for Mac is professional data recovery software for Mac, which can recover lost data from internal hard drives, Macintosh HD, external hard drives, SD cards, USB flash drives, memory cards, memory sticks, etc. Also, when disk is formatted, unreadable, unmountable, unreadable, or unrecognizable, it can easily recover the lost files in these cases. What's more, this program can recover lost data from recover lost data from unmountable macOS partitions, encrypted APFS boot volume, etc.
Through only 4 steps, you can recover lost data from the disk that Disk Utility can't repair.
1. Download and install iBoysoft Data Recovery for Mac.
2. Launch iBoysoft Data Recovery for Mac.
3. Select the disk and click Next button to scan all lost data.
4. Preview the searching results, choose files you need, and click Recover to get them back.
How to fix 'Disk Utility can't repair this disk' issue on Mac?Method 1: Fix Disk Utility can't repair this disk error in Single User Mode.
If Disk Utility can't repair this disk, you can try to repair it by running FSCK command on Mac. FSCK is a powerful command line to verify and repair external hard drive in Terminal.
1. Restart your Mac and, before the Apple logo appears, hold down Command + S keys. This will boot your Mac into Single User Mode.
2. Type in:
3. If you see 'File system was modified', then re-type in the command above again until you see 'The volume _ appears to be OK'.
4. To restart your Mac, type in:
Method 2: Fix Disk Utility can't repair this disk error by reformatting.
If you failed to fix the disk using Single User Mode, then, you have to reformat the disk in Disk Utility as suggested.
Warning: Reformatting will wipe all your files off this disk, so please make sure you have backed up your files with an external drive or have retrieved your files from this corrupted drive with iBoysoft Data Recovery for Mac.
1. Go to Applications > Utilities > Disk Utility.
2. Select the external hard drive and click Erase on the top.
3. Provide a name and a format to format the drive.
4. Wait until the process finishes.
After reformatting this disk, you can restore your backed-up or recovered files to the disk again. IfDisk Utility First Aid still failed on external hard drives, and you receive the information like 'This drive has a hardware problem that cannot be repaired' on your iMac, MacBook Pro, or MacBook Air, you may need to send it to a local repair center or simply replace it with a new disk drive.
Bonus tip: You may not need to repair the disk in Disk Utility
In some cases, if an external drive is shared between a Mac and a Windows PC, you could receive the error message 'Disk Utility can't repair this disk' as well. It's because when a USB drive is disconnected by yank out of the USB port, the disk may be busy in getting data settled down. As a result, the disk won't readable by Mac.
For instance, you have a disk that is formatted with FAT32, and you didn't unmount your disk properly when you remove it from your Windows PC. Then the whole volume will be marked as 'busy' and you'll be prompted to repair the volume if you look at it in Mac's Disk Utility. However Disk Utility will fail to repair the volume, and report:
An easy workaround to this 'Disk Utility can't repair the disk' issue in this situation is to simply plug this disk drive back into a Windows PC, and unmount it properly before plugging it into your Mac.
Note: If you are trying to repair your startup disk or startup volume with Disk Utility, you need to restart your computer and hold Command + R to boot into macOS Recovery mode. Then select Disk Utility in the macOS Utilities window and click Continue. If you want to check the Macintosh HD volume in macOS Catalina, please make sure you also check the Macintosh HD - Data volume.
• Mac won't turn on, what to do?
I have put together a list of what are, in my opinion, the ten best Mac disk repair software and other excellent Mac tools for troubleshooting, diagnosing, and repairing a Mac. Many of them are free or offer a free trial. As Macs continue to gain market share, there is an increased likelihood that you will have to support them if you are a tech. And even if you aren’t a tech, it’s good to know which tools are the best to use when it comes time to repair your own.
Mac OS from Apple WWDC2019
In-page jumps:
Disk Warrior Trial
Free Mac Disk Repair Software Drive Genius – is it the Best Mac Repair App Introduction to our Top 10 Mac Repair Software
Did you know there are several Mac disk repair options that each function differently and one may suit your needs better than another? I detail several for you below so you can decide.
More than just a list of disk repair software, I provide many Mac software solutions for you and your clients! Even better, some are free!
Want to clone a Mac drive? Want to monitor a Mac’s hardware sensors? Want heroic system recovery for mere mortals?! Oh, there are some great software here! Read on.
TechTool Protogo
TechTool Protogo is a Mac repair program suite which contains three of Micromat’s best Mac repair tools; TechTool Pro 8, TechTool Pro Classic, and DiskStudio.
Protogo creates a bootable Mac repair toolbox with these tools as well as any of your own tools on a portable hard drive or flash drive.
You can then boot from this drive, bypassing the OS, and run diagnostics on a computer to determine problems.
Protogo also allows you to repair and recover data from problematic hard drives as well as defragment, optimize, and securely delete data.
Cost: $129.99
Memtest OS X
Memtest OS X is a memory testing program for Mac OS X. It is a command line utility so it can be ran in OS X or in Single-User Mode if your Mac will not boot.
Mac Os Disk Repair Utility
It is great for testing intermittent system problems when you are having trouble determining if it is a memory problem.
If you prefer memtest with a GUI front-end, then be sure to check out Rember.
Rember will run in OS X but will not work in Single-User Mode so Memtest OS X is the better option.
Cost: $1.39
Mac Disk Repair – DiskWarrior 5
Disk Repair for Macs – DiskWarrior utilizes a unique disk repair method for Macs
DiskWarrior is arguably one of the best hard drive repair programs for the Mac.
It works differently than other data repair programs.
Instead of trying to rebuild the damaged data itself, DiskWarrior builds replacement data based off of the original data.
It then verifies the new data structure based on the original to make sure it is error free.
You can also use DiskWarrior as a preventative maintenance utility for hard disks.
When run, it rebuilds your directory eliminating any damage that you may not be aware of. It also optimizes the directory for better performance.
Cost: $99.95 but look for a trial.
If it is more serious and your Mac’s hard drive has crashed, I have provided an extensive data recovery guide with a list of Hard Drive Recovery Tools in my article How to Recover Data from a Crashed Hard Drive.
First Free Disk Repair-Mac – OnyX
Onyx is a maintenance, optimization, and personalization utility for Mac OS X.
It allows you to run hard drive diagnostics, run system maintenance tasks, delete caches, and configure tons of OS X hidden features.
Even if you aren’t using it as a repair utility, it is a great application to help keep your Mac running in top shape.
Cost: Free!
Mac Data Rescue
Data Rescue is a data recovery program that focuses purely on recovering data from corrupt drives instead of hard drive repair.
It scans the corrupt drive analyzing all of its contents and allows you to choose which data you would like to recover.
It even scans for deleted files. Data Rescue II restores the data to a separate drive leaving the original data intact.
It comes with an emergency boot CD that you can use to recover data when the computer will not boot and it also works on drives that won’t mount.
Cost: $99.00
AppCleaner
AppCleaner may not be classified as a repair tool but it can be used as one.
When you are having trouble with an application in OS X, you can simply remove it by dragging it to the Trash.
However, this still leaves behind the applications preferences, caches, and other files that could still cause the same problem after you reinstall it.
AppCleaner will remove all of these files making sure that the app is completely gone before you attempt a reinstall.
Interesting interface!
Cost: Free!
Drive Genius – Is this the Best Mac Repair App?!
Drive Genius is a disk utility application for Macs.
Its main features include:
With all these features, you can see why I ask is it the best Mac repair app overall!
This is actually the same program used to defrag Macs at the Genius Bar in Apple Stores.
Oh yes, Apple uses it.
Drive Genius also comes on a bootable DVD so you can run it even when a Mac will not boot.
Cost: $99.00
Mac Backup – Carbon Copy Cloner
Carbon Copy Cloner is a simple yet very effective backup utility for the Mac. Like most other backup utilities, it can be scheduled to backup your Mac on a regular basis.
Eos utility download for mac. The best part, however, is its ability to completely clone a hard drive with it still being bootable.
This tool comes in very handy when you are replacing hard drives, setting up multiple Macs, or recovering from a system crash.
Carbon Copy Cloner is donation-ware so you can download it for free without any restrictions. How to download jetpack joyride on mac.
Maybe you will be so pleased you will buy them a coffee anyway!
You can also check out SuperDuper which has more features but costs $27.95.
However, if you just need a simple backup and cloning utility, Carbon Copy Cloner does a great job.
Cost: Free! (donation-ware)
Apple Mac Disk Repair – AppleJack
AppleJack is a troubleshooting utility for Mac OS X. It runs under Single-User Mode so it can be used even when OS X will not boot.
AppleJack will repair disks, repair permissions, cleanup cache files, validate preference files, and remove swap files.
You can select these tasks individually or have AppleJack run all of them and even reboot when finished.
Unfortunately, at the time of writing this article, AppleJack is not yet compatible with Leopard but a new version is in the works. Be sure to check their page frequently for an update because this is an invaluable tool.
When I updated this article for 2020, I checked on SourceForge and there were over 600 downloads last week!
Cost: Free! https://gfskqn.weebly.com/blog/mac-os-x-yosemite-download-youtube-video. (open-source)
Mac Os X Disk Repair Utility Download Windows 10Hardware Monitor
Hardware Monitor is a utility that allows you to view data from the hardware sensors in a Mac.
It currently has support for temperature readings, battery data, voltage, current, fan speed, power and load, ambient light, as well as user-defined artificial sensors.
It’s a great utility to use when simply trying to find out if your hardware is malfunctioning.
Cost: € 7.00 (can also be purchased with U.S. Dollars)
Also consider
OSX disk repair
This is kind of a nice segway into handy hardware tools and toolkits. Click on the following link if you want to see some great ideas on what I recommend for your Mac or PC Repair Toolkit.
As you may know, I believe your should support Macs in your Computer IT Consultant Business. I state my case here in my article on Why You Should Support Macs With Your IT Business.
Well if you were counting, that is 4 totally free Mac OSX disk repair utilities, and one so cheap it may as well be free!
The best Mac repair disk software may well be a paid one depending on your exact needs, and I’ve shown you my pick for the best of those too.
If you know of other great Mac software let me know in the comments below. What Mac OS X repair tools do you like? Is there another Mac Disk Repair utility you’d suggest? Please leave a comment to help others, or if the above tools have helped you.
And as for hardware, click this link if you want to repair hard drive-Mac for more details.
Mac Os X Utilities DownloadSummary of Best Mac Repair Software:
Excellent Mac disk repair software is provided above, for you to consider and try their features for yourself. I didn’t stop there. This list contains some other handy Mac software I consider to be the best tools for techs and Mac owners. Mac Os X Disk Repair Utility Download Free
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