Best free Blu-ray Movie Download Sites 2018. Let’s have a brief look at what this Disk Utility is capable of since it is born to serve this Mac OS X. Disk Utility is introduced to manage internal discs even with external storage devices including erasing and formatting process. You should know that a lot of software claim to be free.

Summary :

Are there some disk problems on your Mac? Want to use Disk Utility to fix them but receive an error message 'Disk Utility can't repair this disk'? This post will walk you through how to quick and effectively fix this issue.

Help! Disk Utility Failed to Repair This Disk

'My external drive is a Samsung M2 Portable 3 Media, 500GB. I might have accidentally disconnected the hard drive without ejecting it first. Now when I run disk utility and click Repair Disk it says: '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.' forums.macrumors

Disk Utility, developed by Apple, is a comprehensive system utility for performing disk and disk volume-related tasks on the Mac operating systems. These tasks include formatting, partitioning, erasing, cloning disks, repairing a damaged disk, etc. When certain disk problems happen, to repair this disk using Disk Utility will be a good choice.

However, sometimes you may receive the error message 'Disk Utility stopped repairing 'Macintosh HD'/disk1s2/External HDD, etc. Disk Utility can't repair this disk'.

Usually, this problem may not only happen on Macintosh HD but also on an external hard drive in Mac Mavericks, Yosemite, EI Capitan, or Sierra.

Actually, the above message won't show up in normal circumstances of disk errors. But if the hard drive is beyond the repair scope of Disk Utility, for example, file system gets corrupted, the issue appears.

Well then, what should you do to fix Macintosh HD, external hard drive or another disk that Disk Utility can't repair? Here are some solutions for you.

Fix Disk Utility Can't Repair This Disk

If Disk Utility can't repair external hard drive or Macintosh HD, you should do as the error message shows: back up as many of your files as possible before fixing the issue for data protection.

Back up Important Files with Time Machine on Mac

Before solving the drive that Disk Utility can't repair, the most important thing is to make a backup of the disk data. Usually, the tool called Time Machine will be the good option.

It is the built-in feature of the Mac and can back up your files with ease to an external storage device so as to restore them in the event of unexpected accidents.

Then, here comes the question: how to make a time machine backup from Disk Utility?

Step 1: Connect an external storage drive to your Mac.

Step 2: Then an alert may appear on your Mac asking if you want to configure it as the backup disk with Time Machine. Just click Use as Backup Disk. Besides, it is recommended to check Encrypt Backup Disk.

Step 3: If you don't receive this alert, please go to System Preferences > Time Machine.

Step 4: Click Select Backup Disk to select the storage device which you wish to back up to, and click Use Disk.

This post from apple website - How to use Time Machine to back up your Mac shows you more information.

Solution 1: Fix the Hard Drive in Single User Mode

What if Disk Utility stopped repairing Macintosh HD? As is well known, Macintosh HD can be viewed on the Mac desktop and it is similar to the 'My Computer' icon in Windows. Moreover, this drive contains the Mac operating system. To fix the issue, you should use FSCK tool. This is the built-in diagnostic & repair program and it can verify & repair the current startup disk.

Step 1: Restart your Mac, and then press and hold the Command + S keys during the startup to enter Single User Mode which will provide you with a text-mode terminal.

Step 2: Type the command /sbin/fsck -fy.

By default, the target disk in Single User mode is read-only, thus, you need to change that: type /sbin/mount -uw /.

• If everything is fine, the message 'The volume Macintosh HD appears to be OK' will appear.
• If some problems are found, you will see 'File system was modified'. Just run the fsck -fy command again until you see a “The volume Macintosh HD appears to be OK” message.

Step 4: Type reboot to exit Single User Mode.

If FSCK cannot help you to fix Disk Utility stopped repairing Macintosh HD, another thing you can do is to reinstall the Mac operating system. How to reinstall macOS will be helpful.

Solution 2: Reformat Drive When Disk Utility Can't Repair External Drive

If Disk Utility failed to repair your external hard drive or other data disk, the above solution is not suitable. In this case, you can do nothing but to reformat the disk. How can you format the target hard drive?

Step 1: Go to Applications > Utilities to find and launch Disk Utility and you can find all the hard drives.

Step 2: Select the target disk or drive, click Erase feature in the top menu. Note that this operation will destroy all the data stored on it.

Step 3: Enter a name, choose a file system and a partition map. Finally, click Erase button.

After completing the formatting, Disk Utility can't repair this disk issue on an external hard drive can be solved. And there is another thing you should do, that is to restore the deleted data from the backups.

Restore Your Backed-up Files

Step 1: Select Enter Time Machine from the menu bar. If you don't see this option, please go to System Preferences > Time Machine to check Show Time Machine in menu bar.

Step 2: In Time Machine, open the folder containing the files you want to restore.

Step 3: Use the timeline on the edge of the screen or onscreen up and down arrows to quickly find needed items.

Step 4: Select the needed items and click Restore button to finish the recovery.

Recover Data from Formatted Hard Drive on Mac

When Disk Utility failed to repair disk, you may forget to back up the important files and directly format the target disk. As a result, formatting will make you lose all the data. In this case, the key thing is to recover lost files from the formatted hard drive. Well then, is there any data recovery software help you to get files back? Sure! Just keep reading.

As to data recovery for Mac, MiniTool Mac Data Recovery, released by MiniTool Solution Ltd., is worthy of being recommended. It is specialized in recovering deleted data from the internal hard drive, external hard drive, SD card, USB flash drives, memory sticks and other storage devices.

In addition, it can restore data from formatted, damaged, or lost partition. What's more, it supports HFS, HFS+, FAT32 and exFAT file systems. And it is compatible with Mac OS X 10.5 and above.

When 'Disk Utility can't repair this disk error' appears if you forget to make a backup of your external hard drive or other data drives and format it, free download MiniTool Mac Data Recovery on your Mac. And then, begin the Mac hard drive recovery.

Hot article: Hurry To Get Files Off Failing Hard Drive On Mac With Great Tool

Step 1: Launch MiniTool Mac Data Recovery to its main interface and then you will see four recovery modules.

• Undelete Recovery: this feature is designed to retrieve deleted files from Mac Trash.
• Lost Partition Recovery: this can help you to recover deleted data after the partition is lost or deleted.
• Damaged Partition Recovery: this function helps you to get data back from formatted, damaged partition.
• Digital Media Recovery: it can recover lost pictures, music files and videos from memory sticks and flash drives.

Which one should be used here? After formatting the drive that Disk Utility failed to repair, we highly recommend using Damaged Partition Recovery.

Step 2: Then, MiniTool Mac Data Recovery will detect all the disk partitions on your Mac. And you need to select the target to start a full scan.

Step 3: Now, this data recovery software is scanning the formatted drive. And the scan time is based on the partition data size. If there are many lost files as well normal files, please wait patiently until the scan completes.

Step 4: After the scan, the deleted files after fixing 'Disk Utility can't repair disk' error will be found. In the left Path section, unfold each folder to search for needed files.

To put it simply, it is not easy to find needed files by unfolding each folder in Path list if there are many folders. Take it easy! MiniTool Mac Data Recovery offers you three useful options so as to find your needed data.

① Type

This option lists all the found files according to file types. If you want to recover lost pictures, please unfold Graphic & Picture to search for needed files.

② Find

Type the detailed file name to find files.

③ Filter

This option can help you to quickly find files as long as you configure some settings, including filename/extension, file size, creation or modification date, etc.

After selecting the needed files, click Save button.

Step 5: At last, click Browse to specify a storage path.

It is recommended to save the recovered files on another hard drive rather than the original drive to avoid data overwriting.

Within simple steps, MiniTool Mac Data Recovery helps you to recover lost files from the formatted drive. If you encounter 'Disk Utility can't repair this disk' error message and format the target drive but forget to back up the crucial files, just get this software to get lost data back.

Bottom Line

Get 'Disk Utility can't repair this disk' error message on Macintosh HD or an external hard drive in Mac Mavericks, Yosemite, EI Capitan, or Sierra?

This post offers you the corresponding solution in two cases - Disk Utility stopped repairing Macintosh HD and Disk Utility can't repair external drive. Just do as the above paragraphs show. Besides, if you lost some important files when fixing the issue, try to recover them with MiniTool Mac Data Recovery.

Should you have any suggestions of Disk Utility failed to repair disk issue or any questions during using our software for Mac hard drive recovery, please don't hesitate to tell us by leaving a comment in the following area or sending an email to [email protected].

Kappy's Personal Suggestions About OS X Maintenance

For disk repairs use Disk Utility. For situations DU cannot handle the best third-party utility is: Disk Warrior; DW only fixes problems with the disk directory, but most disk problems are caused by directory corruption. Drive Genius provides additional tools not found in Disk Warrior for defragmentation of older drives, disk repair, disk scans, formatting, partitioning, disk copy, and benchmarking.

Four outstanding sources of information on Mac maintenance are:

1. OS X Maintenance - MacAttorney.

2. Mac maintenance Quick Assist

3. Maintaining Mac OS X

4. Mac Maintenance Guide

Periodic Maintenance

OS X performs certain maintenance functions that are scheduled to occur on a daily, weekly, or monthly period. The maintenance scripts run in the early AM only if the computer is turned on 24/7 (no sleep.) See Mac OS X- About background maintenance tasks. If you are running Leopard or later these tasks are run automatically, so there is no need to use any third-party software to force running these tasks.

If you are using a pre-Leopard version of OS X, then an excellent solution is to download and install a shareware utility such as Macaroni, JAW PseudoAnacron, or Anacron that will automate the maintenance activity regardless of whether the computer is turned off or asleep. Dependence upon third-party utilities to run the periodic maintenance scripts was significantly reduced after Tiger. (These utilities have limited or no functionality with Snow Leopard, Lion, or Mountain Lion and should not be installed.)

Defragmentation

OS X automatically defragments files less than 20 MBs in size, so unless you have a disk full of very large files there's little need for defragmenting the hard drive except when trying to install Boot Camp on a fragmented drive. But you don't need to buy third-party software. All you need is a spare external hard drive and Carbon Copy Cloner.

Cheap and Easy Defragmentation

You will have to backup your OS X partition to an external drive, boot from the external drive, use Disk Utility to repartition and reformat your hard drive back to a single volume, then restore your backup to the internal hard drive. You will use Carbon Copy Cloner to create the backup and to restore it.

1. Get an empty external hard drive and clone your internal drive to the

external one.

2. Boot from the external hard drive.

3. Erase the internal hard drive.

4. Restore the external clone to the internal hard drive.

Clone the internal drive to the external drive

1. Open Carbon Copy Cloner.

2. Select the Source volume from the left side dropdown menu.

3. Select the Destination volume from the left side dropdown menu.

4. Be sure the Block Copy button is not depressed or is ghosted.

5. Click on the Clone button.

Destination means the external backup drive. Source means the internal startup drive.

Restart the computer and after the chime press and hold down the OPTION key until the boot manager appears. Select the icon for the external drive and click on the upward pointing arrow button.

After startup do the following:

Erase internal hard drive

1. Open Disk Utility in your Utilities folder.

2. After DU loads select your internal hard drive (this is the entry with the

mfgr.'s ID and size) from the left side list. Note the SMART status of the

drive in DU's status area. If it does not say 'Verified' then the drive is

failing or has failed and will need replacing. SMART info will not be

reported on external drives. Otherwise, click on the Partition tab in the

DU main window.

3. Under the Volume Scheme heading set the number of partitions from the

drop down menu to one. Set the format type to Mac OS Extended

(Journaled.) Click on the Options button, set the partition scheme to

GUID then click on the OK button. Click on the Partition button and wait

until the process has completed.

Restore the clone to the internal hard drive

1. Open Carbon Copy Cloner.

2. Select the Source volume from the left side dropdown menu.

3. Select the Destination volume from the left side dropdown menu.

4. Be sure the Block Copy button is not selected or is ghosted.

5. Click on the Clone button.

Destination means the internal hard drive. Source means the external startup drive.

Note that the Source and Destination drives are swapped for this last procedure.

Malware Protection

As for malware protection there are few if any such animals affecting OS X. Starting with Lion Apple has included built-in malware protection that is automatically updated as necessary.

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Helpful Links Regarding Malware Protection:

1.Mac Malware Guide.

2. Detecting and avoiding malware and spyware

3. Macintosh Virus Guide

For general anti-virus protection I recommend only using ClamXav, but it is not necessary if you are keeping your computer's operating system software up to date. You should avoid any other third-party software advertised as providing anti-malware/virus protection. They are not required and could cause the performance of your computer to drop.

Cache Clearing

I recommend downloading a utility such as TinkerTool System, OnyX 2.4.3, or Cocktail 5.1.1 that you can use for periodic maintenance such as removing old log files and archives, clearing caches, etc. Corrupted cache files can cause slowness, kernel panics, and other issues. Although this is not a frequent nor a recurring problem, when it does happen there are tools such as those above to fix the problem.

For emergency cleaning install the freeware utility Applejack. If you cannot start up in OS X, you may be able to start in single-user mode from which you can run Applejack to do a whole set of repair and maintenance routines from the command line. Note that AppleJack 1.5 is required for Leopard. AppleJack 1.6 is compatible with Snow Leopard. (AppleJack works with Snow Leopard or earlier.)

Installing System Updates or Upgrades

When you install any new system software or updates be sure to repair the hard drive and permissions beforehand. I also recommend booting into safe mode before doing system software updates.

Backup and Restore

Having a backup and restore strategy is one of the most important things you can do to maintain your computer. Get an external Firewire drive at least equal in size to the internal hard drive and make (and maintain) a bootable clone/backup. You can make a bootable clone using the Restore option of Disk Utility. You can also make and maintain clones with good backup software. My personal recommendations are (order is not significant):

1. Carbon Copy Cloner.

2. Deja Vu

3. SuperDuper!

4. Synk Pro

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5. Tri-Backup

Visit The XLab FAQs and read the FAQs on maintenance and backup and restore.

Always have a current backup before performing any system updates or upgrades.

Be sure you have an adequate amount of RAM installed for the number of applications you run concurrently. Be sure you leave a minimum of 10% of the hard drive's capacity or 20 GBs, whichever is greater, as free space. Avoid installing utilities that rely on Haxies, SIMBL, or that alter the OS appearance, add features you will rarely if ever need, etc. The more extras you install the greater the probability of having problems. If you install software be sure you know how to uninstall it. Avoid installing multiple new software at the same time. Install one at a time and use it for a while to be sure it's compatible.

Additional suggestions will be found in:

1. Mac OS X speed FAQ

2. Speeding up Macs

3. Macintosh OS X Routine Maintenance

4. Essential Mac Maintenance: Get set up

5. Essential Mac Maintenance: Rev up your routines

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6. Five Mac maintenance myths

7. How to Speed up Macs

8. Myths of required versus not required maintenance for Mac OS X

Referenced software can be found at CNet Downloads or MacUpdate.

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Feb 9, 2013 10:50 AM