Jan 07, 2020 Best Overall Hard Drive Repair Software: Disk Drill Choosing the best overall hard drive repair software was easy. Disk Drill is by far the most modern data recovery suite on the market, both in terms of its design and its features. With Disk Drill, you can recover over 200 file formats from all storage devices without any expert skills. Jun 13, 2019 Right-click the program you want to fix and select Repair, or if that’s not available, select Change. Then follow the directions on the screen. Then follow the directions on the screen. For more tips, see Repair an Office application. App can’t be opened because Apple can’t check it for malicious software. Using an app that can’t be checked for malicious software might harm your Mac or compromise your privacy. If you’re certain that the app you want to use is from a trustworthy source, you can override your Mac security settings to open it.
If you've encountered a problem with macOS, the solution might be to reinstall the system on your Mac. This can be done by any Mac owner, but it can be a little bit complicated. You'll need to put your Mac into macOS Recovery, which gives you tools to diagnose problems on your Mac, as well as reinstall the operating system.
Here's how to reinstall macOS using Recovery mode.
Entering macOS Recovery
macOS Recovery has tools at its disposal that allow you to diagnose problems with your Mac's hard drive, reinstall macOS, and restore from a Time Machine backup. You can enter Recovery by pressing certain key combinations. The combination you choose will determine which version of macOS will be installed on your system when you select Reinstall macOS.
- Press Command - R to install the latest version of macOS that was installed on your Mac without installing a later version.
- Press Options - Command - R to upgrade to the latest version of macOS that's compatible with your Mac.
- Press Shift - Option - Command - R to install the version of macOS that came with your Mac, or the version closest to it that's still available.
How to check your startup disk with Disk Utility in macOS Recovery mode
The first thing you'll want to do is make sure your Mac's startup disk is healthy. You'll need to use Disk Utility to do that.
- Click Disk Utility when in macOS Recovery.
- Click Continue.
- Click on your Mac's startup drive in the Disk Utility sidebar. It should be the drive at the top of the sidebar if there are multiple drives.
- Click First Aid.
- Click Run. First Aid will run, checking the health of your Mac's drive. This process could take a little while.
- Click Done.
- Click Disk Utility in the Menu bar.
- Click Quit Disk Utility.
How to erase your startup disk in macOS Recovery mode
If you need to start completely fresh, then you'll want to erase your startup disk using Disk Utility. If you want the content on your Mac to stay intact, skip to the next section.
- Click on your startup disk in the Disk Utility sidebar.
- Click Erase.
- Click the Format drop-down menu.
- Click on the format you want to use for your drive. If you're running macOS High Sierra or later on a Mac with an SSD, your choices will be some form of APFS.
- Click Erase. Your drive will proceed to be erased.
How to reinstall macOS while in Recovery mode
The next step is to reinstall macOS.
- Click Reinstall macOS.
- Click Continue.
- Click Continue.
- Click Agree.
- Click Agree.
- Click on the drive on which you wish to install macOS.
- Enter your Apple ID and password if you're asked to, though you might not be.
- Click Install.
Your Mac will now go through the normal macOS installation process, eventually restarting. If you're starting from scratch, you'll need to set up your Mac from scratch.
Questions?
If you have any more questions about reinstalling macOS on your Mac, let us know in the comments.
Updated December 2019: Everything is up to date through macOS Catalina.
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Summary: This is a guide to fix external hard drive corrupted issue for you, and it talks about how to recover lost data from a corrupted external drive and iBoysoft Data Recovery for Mac, the best corrupted external hard drive data recovery software.
What is corrupt hard drive on Mac?
Hard drive corruption on Mac is a drive failure of mounting, accessing, or reading on Mac, which frequently happens to external hard drives and USB flash drives. It's because they are usually used to back up a large amount of data or to extend the capacity of Mac.
A corrupted external hard drive will look like this: the Mac computer won't recognize the external hard drive when you plug it into the USB port, and the hard drive will not be automatically mounted and you can't access data on this drive. Sometimes, the Mac would return an error message like 'The disk you inserted is not readable' to report a hard drive corrupttion. Once that happens, you will lose access to the files stored on the corrupted external hard drive. It's such an annoyance especially when you don't have a copy of data backup while data on this external hard drive is especially important to you.
Don't worry. Let's check out the crux of external hard drive corruption and learn how to fix or repair corrupted external hard drives on Mac in case of losing any significant data.
- Table of contents
- 1. Why you external hard drives is corrupted?
- 2. How to fix/repair corrupted external hard drives on Mac?
- 3. Conclusion
Why you external hard drives is corrupted?
There are various reasons leading to external hard drives corruption, including drives sharing among different platforms, faulty connection, unsafe ejection, interruption during transferring files, hardware malfunction and virus infection, etc.
Don't know which is the troublemaker of your external hard drive corruption like this user?
Hello, I have a problem with my external hard drive. When I plug it into my Mac, it takes too long to acknowledge the drive and files can't be opened at all. I tried to reformat my external hard drive but it says reformat unsuccessful. Any suggestion on how to fix corrupted external hard drives on Mac?
Check the following fixes one by one and you will work it out.
How to fix/repair corrupted external hard drives on Mac?
Solution 1: Check if your drive is properly plugged in
Even though it sounds foolish, it could troubleshoot your corrupted external hard drive. Simply plug your external hard drive slowly or quickly into the USB port and see if you can access this drive.
Solution 2: Check if it is a faulty connection
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Since the external hard drive is connected through the USB cable and port, it could be corrupted due to a wobbly connection. You can just connect your external hard drive to another USB port or USB cable.
![Mac computer software programs Mac computer software programs](/uploads/1/2/6/4/126450375/618941043.jpg)
Solution 3: Fix/repair the corrupted external hard drive with Disk Utility
If the connection is not supposed to be blamed and you sure your external hard drive has no hardware problems, it could be a minor file system corruption which could be fixed through Disk Utility. Disk Utility is a built-in utility on Mac to verify and fix basic external hard drives errors, such as multiple apps quit unexpectedly on Mac computer, a file is corrupted, an external device is corrupted or doesn't work properly, or your computer won't start up, etc.
1. Go to Utilities > Disk Utility.
2. Select the corrupted external hard drive from the sidebar.
3. Click First Aid on the top of Disk Utility window. It may take a while to fix the errors.
Solution 4: Fix/repair the corrupted external hard drive by reformatting
If Disk Utility failed to fix the corrupted external hard drive for you, the file system of your external hard drive could be seriously corrupted and need to be reformatted with a new file system. In some ways, reformatting is able to fix your external drive corruption issue but from another perspective, reformatting will erase the disk and you will lose your important data. Fortunately, there is a tool called iBoysoft Data Recovery for Mac that can recover your data firstly before you reformat this corrupted external hard drive. It's a risk-free way to fix the corrupted external hard drive and you don't have to worry about data loss any more.
iBoysoft Data Recovery for Mac is free and reliable Mac data recovery software that can recover lost data from corrupted external hard drives and recover lost data from formatted/unreadable/unrecognizable external hard drives. Moreover, this useful tool can undelete files from Trash, recover lost/deleted APFS partition and recover lost data from hard drives, USB flash drive, memory cards, pen drives, etc. It is compatible with macOS 10.15/10.14/10.13/10.12 and Mac OS X 10.11/10.10/10.9/10.8/10.7.
Follow the steps below to fix the corrupted external hard drive.
Step 1: Recover lost data from the corrupted external hard drive with iBoysoft Data Recovery for Mac.
1. Download and install iBoysoft Data Recovery for Mac on your Mac computer.
2. Connect the corrupted external hard drive to your Mac and launch iBoysoft Data Recovery for Mac.
3. Select the corrupted drive and click 'Next' to scan for all the lost files.
4. Double-click to preview the scanning results and choose files you want to get back.
5. Click 'Recover' and save them to another well-functioned drive.
6. Check the recovered files and make sure all the lost files have been restored successfully.
Step 2: Fix the corrupted external hard drive by reformatting.
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After successfully recovering data from the corrupted external hard drive, you can fix it by reformatting now.
1. Launch Disk Utility.
2. Select the corrupted external hard drive from the sidebar of the window.
3. Click the Erase button on the top of Disk Utility window.
4. Complete related information (name, format, scheme, etc.), and then click the Erase button.
Conclusion
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To avoid losing data from corrupted external hard drive, you'd better do yourself a huge favor and make sure your backup strategy is up and running and foolproof. A little pain now will save you a world of hurt in the future. If you have already lost data because of external hard drive corruption, without wishing to pour salt in the wound, recover the lost data with iBoysoft Data Recovery for Mac software for good.