Macos Repair External Disk

by Justin Kenny, updated on 2017-12-22 to Storage Device Recovery

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Here, you can follow these steps to repair your external hard drive on Mac. Step 1: Open Disk Utility application. Step 2: Select the external hard drive and erase it with Disk Utility. Disk Utility will format and erase the external hard drive under Mac OS. Then your external hard drive is able to be reused, recycled, or resold. It is very simple. About Mac Error Code 13949: Mac is a special and awesome operating system which is basically included with several ultra-advanced features. All the default software.

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1. When I connect my 1TB external hard drive with a Mac, it pops up a window, says 'The disk you inserted was not readable by this computer'. I don't know what happened. The Mac just can't read the external hard drive, I can't export my documents from the unreadable external hard drive.

2. My external hard drive can't be recognized by my Mac. When I connect it with my Mac, I can't find the external hard drive. It just disappears from my Mac.

3. When I insert an external hard drive with my Mac, it asks me to format the external hard drive. I don't want to format the external hard drive because all my data is in the external hard drive. How to solve this issue?

4. I open an external hard drive on my Mac, all files are gone. Only some shortcuts. Where are my files gone? How to get them back? I think the files are infected by unknown virus.

Logical error, virus attacking, physical damage and other unknown reasons would result in data loss on external hard drive. When you connect your external hard drive with your Mac, you can't access to your data or just can't find the connected external hard drive on your Mac. In this case, you need to repair the external hard drive on your Mac and recover all your lost files. Here are the steps:

1. Recover lost data before repairing external hard drive on Mac

Please don't use or format your external hard drive before you export/recover all your files from the external hard drive. External hard drive data recovery software for Mac can help you easily and completely recover all existing data and deleted data from the unreadable or infected external hard drive under Mac OS.

Step 1: Download and install external hard drive data recovery software on your Mac. Launch it from Launchpad.

Step 2: Select file types you want to recover or just let this software recover all types of files.

Step 3: Select the external hard drive to scan.

Ms word store. Step 4: Preview and recover all files from the external hard drive.

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Advanced Recovery mode of external hard drive data recovery software for Mac will deeply scan the external hard drive and find all existing files, hidden files and deleted files on the external hard drive. You can selectively save the files to your Mac hard drive.

2. Repair external hard drive on Mac

After your export all files to your Mac or a secondary hard drive, you can repair the external hard drive on your Mac. Formatting is the easiest way to help you repair a bad external hard drive on Mac. Disk Utility or other disk formatting software for Mac can help you format external hard drive under Mac OS. Here, you can follow these steps to repair your external hard drive on Mac.

Mac Disk Repair App

Step 1: Open Disk Utility application.

Step 2: Select the external hard drive and erase it with Disk Utility.

Disk Utility will format and erase the external hard drive under Mac OS. Then your external hard drive is able to be reused, recycled, or resold. It is very simple.

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Dec 16, 2020 • Filed to: Solve Mac Problems • Proven solutions

How Do I Recover Files from an External Hard Drive on a Mac?

In today's world, external hard drives have been widely used as supplementary mass storage devices for Mac. It is always an excellent way to keep your valuable photos, videos, and other files in an external storage device so that you can bring them anywhere. Then the problem might come: What if you accidentally delete files in your external hard drive? What if files are lost from your formatted external hard drive? Open source movie creator. Or what if files become corrupted in your external hard drive?

When facing those annoying Mac external hard drive data loss issues, Mac users may ask: How do I recover files from a corrupted, broken or formatted external hard drive on Mac OS X? If you are lucky enough, you may have a backup copy of lost files, and you can quickly restore them from that copy. If not, you can still ask for help from a Mac external hard drive data recovery program.

Part 1. How to Recover Data from External Hard Drive on Mac OS X

To recover data from external hard drive on Mac OS X, you can take Recoverit Data Recovery for Mac as a try. This fascinating Mac external hard drive recovery software supports almost all brands of external hard drives, including Seagate, LaCie, Western Digital, Maxtor, Samsung, etc. It also supports recovering all types of files no matter whether they are deleted, formatted, or corrupted from an external drive. Moreover, this Mac data rescue software allows you to retrieve files from external hard drives, even if they are corrupted, broken, formatted, dead, crushed, or damaged.

Video Guide to External Hard Drive Recovery

This video tutorial demonstrates to you how to recover data from external hard drive on Windows. The steps are true of Mac OS X file recovery from the outer disk. You can also turn to the below text-based macOS recovery guide.

2. How to Retrieve Data from External Hard Drive on Mac

Download and install Recoverit data recovery on your Mac computer. Launch Recoverit Data Recovery for Mac and follow the next simple steps to perform external hard drive data recovery on Mac OS X.

1. Select external hard drive

In this step, you can choose a specific location where the files get deleted or lost. To recover data from Mac external hard drive, please select the drive letter for your external hard drive and click 'Start' to scan data.

1. Scan hard drive to search data

Recoverit will start an all-around scan. The 'All-Around Recovery' mode will deep dig into your Mac external hard drive and piece the bits of your files together on it. It might take a little long time.

1. Restore files from Mac external hard drive

Now you can preview and check the found contents in the window after the scan. Then select files you need and click 'Recover' to save them on your Mac.

Data Recovery Tips：

• To avoid recoverable files from being overwritten during the recovery, please do select a folder on your Mac rather than the external disk to save them.
• Scanned out of the photos, documents, video, audio, and other documents, display 'preview failed,' the material has been damaged, can not be restored.
• For the software does not support the preview of the file type, such as compressed files, installers, etc., only the final recovery, to know whether the file can be used frequently.
• Data recovery is not a panacea that can't guarantee 100% recovery successfully in any situation. Therefore, you should prevent data loss effectively with a good habit to backup your data timely.

Part 3: How to Repair External Hard Drive on Mac

To repair external hard drive on Mac, there are two options, Disk Utility and Terminal. Now, let's move on and take a look at how to fix external hard drive on Mac.

Repair External Hard Drive with Disk Utility

1. Go to Apple Menu > Restart. Restart Mac and hold 'Command + R' keys.
2. Click 'Disk Utility' > 'Continue' > 'View' > 'Show All Devices'.
3. Select the external hard drive you want to repair in the sidebar.
4. Click 'First Aid' > 'Run' if you get 'overlapped extent allocation.'
5. Disk Utility will repair your external hard drive on Mac usually.

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Repair External Hard Drive with Terminal

1. Go to Applications > Utilities > Terminal
2. Type the command line: 'cd /Volumes' and 'ls.' Press 'Return' to get a list of hard drives.
3. Type 'diskutil verifyVolume xxx (external storage name)' and Return.
4. Type 'diskutil repairvolume /Volumes/xxx (external hard drive name)' and Return.

After repairing the external hard drive on Mac, turn to Part 1 to recover files from the external hard drive. With Mac hard drive data recovery software, at least 96% of your data stored on the external hard drive can be retrieved without any hassle and much effort. Also, it enables you to scan your external hard drive and preview files on your Mac before recovery.

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