1. Disk Repair Utility For Mac
2. Hard Disk Corrupted Repair Mac
3. External Hard Disk Repair Tool Mac
4. Hard Disk Repair Utility For Macbook Pro
5. Hard Disk Repair Software For Mac

Summary: If your external drive is greyed out in Mac's Disk Utility, you will find the best solution to fix this problem in this post. If necessary, you can also download iBoysoft Data Recovery for Mac to recover lost data from your greyed-out external hard drive.

WD Drive Utilities for Windows. WD Security for Windows. Western Digital Dashboard. Software for Mac GoodSync for WD. Install WD Discovery for Mac. WD Drive Utilities for Mac. WD Security for Mac. Product Firmware Product. If your product is. Repair a storage device in Disk Utility on Mac. Disk Utility can fix certain disk problems—for example, multiple apps quit unexpectedly, a file is corrupted, an external device doesn’t work properly, or your computer won’t start up. Disk Utility can’t detect or repair all problems that a disk may have. So, your hard drive volume can become unmountable because of reasons like Disk Utility failure, File System corruption, and Mac OS issues. If you have this issue, it is essential to recover data from such a drive at the earliest. OS X’s Disk Utility—which enables you to format, partition, repair, and perform other kinds of maintenance on disks (including SSDs, flash drives, and disk images)—is good for what it does.

You plug an external hard drive into your Mac as normal, but the external hard drive is not showing up in Mac Finder nor on the desktop this time. So, you launch Disk Utility to check this drive, only to find that the external hard drive is greyed out in Disk Utility. You can calm down first because if you see the external hard drive in Disk Utility with some disk information, your external hard drive at least has no hardware errors. That's to say, you have a great chance to repair it without data loss.

Now, look through the table below and find the best solution to fix this greyed out external hard drive issue on your Mac.

The symptoms of hard drive dimmed out in Disk Utility are different from case to case. Therefore, let's first take a closer look at the reasons for this issue before you set about repairing your external hard drive that is faded in Disk Utility.

Why external hard drives greyed out in Disk Utility?

Many users are confronted with this annoying issue and are looking for a feasible solution. However, they have no idea exactly why their external hard drives are greyed out in Disk Utility, just like the user from the forum of MacRumors:

'I've been Googling for solutions for the past seven hours. The thing is, I was about to back up and of course, My External Hard Drive in Disk Utility Is Grayed Out!!! My life lives on this disk. I want to also mention that the computer reads the disk. I know this because it appears in Disk Utility, but it's grayed out. Someone helps me.'

Then what could be the cause of this problem?

Some common reasons, including sudden power failure, unsafe ejection, virus attacks could make the disk unrecognizable. What's worse, they may damage the file system or partition table of this drive, resulting in disk corruption. If the file system is corrupted too seriously to be read by the operating system, your external hard drive, for example, WD My Passport will be greyed out in Disk Utility.

After knowing what may make your disk greyed out in Disk Utility, now you can suit the remedy to the case by finding the corresponding solutions in the following part.

How to fix when external hard drives greyed out in Disk Utility?

One of the most common appearances you might see is that the external hard drive shows up in Disk Utility but is greyed out in the left sidebar. What you can do in this situation?

Solution 1:Try to mount the external hard drive manually

Sometimes, your external hard drive is greyed out in Disk Utility just because it was not mounted. Thus, you try to mount this external hard drive in Disk Utility manually. To do this, you can select your external drive and click on the 'Mount' button at the upper menu bar. If theexternal hard drive is not mounting in Mac Disk Utility still, reboot your Mac and try again.

Solution 2:Update the disk driver and extension

Another practical solution to this issue is to update the necessary drivers and extensions. To update an outdated disk driver, you can simply open your App Store and choose the available one to update. Or if you receive some errors like 'System Extension Blocked', it means a disk driver on your Mac is not working due to the lack of an extension, and you can easily enable this extension to be loaded in 'Security and Privacy'. After updating the disk driver or extension, you can reboot your Mac, reconnect the external drive to your Mac, and then remount this drive.

How to fix when external drives won't mount on Mac?

The external hard drive shows up in gray but won't mount in Disk Utility, even you have tried to manually mount it? Don't worry, you can check the following solutions and see if they can solve your problem.

Solution 1:Repair this external hard drive with First Aid

In some cases, a disk is unmountable and greyed out in Disk Utility because some minor disk errors are stopping your Mac reading this drive. Fortunately, there is a built-in utility on your Mac called First Aid is able to check and repair such minor file system errors.

Step 1: Go to Utilities, find Disk Utility and run this program.

Step 2: Click Show All Devices in View option and select this external hard drive in the left sidebar.

Step 3: Click First Aid in the top menu of Disk Utility.

Step 4: Click Run to check and repair errors in this drive.

Solution 2:Reformat this external hard drive

SupposeFirst Aid failed on the external hard drive and you still can't open it, your drive is greyed out in Disk Utility because the file system of the drive could be seriously corrupted. Reformatting can fix the file system corruption, but it also will erase all data on it. Therefore, if you didn't back up data before or this external hard drive is used as a Time Machine backup drive, the safe choice is to recover lost data firstly with reliable data recovery software, likeiBoysoft Data Recovery for Mac. If data loss is not a hassle for you, you can just skip to reformatting.

iBoysoft Data Recovery for Mac is professional and free Mac data recovery software, which can recover lost data from unmountable/formatted/inaccessible external hard drives. It can recover lost data from APFS, HFS+, HFS, FAT32 and exFAT formatted external hard drives, USB drives, flash drives, SD cards, CF cards, memory cards, etc. This software also can undelete documents, pictures, emails, music, etc. from Trash.

It supports macOS 10.15 (Catalina), macOS 10.14 (Mojave), macOS 10.13 (High Sierra), macOS 10.12 (Sierra) and Mac OS X 10.11 (El Capitan), 10.10 (Yosemite), 10.9 (Mavericks), 10.8 (Mountain Lion), 10.7 (Lion).

Step 1: Recover lost data with iBoysoft Data Recovery for Mac

1. 1. Download, install and launch iBoysoft Data Recovery for Mac on your Mac.
2. 2. Select the external hard drive that is greyed out in Disk Utility and click Next to scan for data stored on this drive.
3. 3. You will see the scanning results in the left sidebar with three categories: files path, type and time. Please double click these files to preview them to make sure your files are not corrupted.
4. 4. Select the files you want to get back and click Recover to recover them from this external hard drive. Remember to save these files to another healthy drive for your sake.

Step 2: Reformat this external hard drive with Disk Utility

• How to format external hard drives on Mac?

How to fix when Partition external drive greyed out in Disk Utility?

Solution 1:Check if the external hard drive is NTFS formatted

As you probably know, most external drives would be formatted with Windows NTFS file system by the manufacturer, while NTFS file system is read-only on Mac computers. That's to say, you can't perform any input operation to this disk, including re-partition. So have a check if this external disk is Windows NTFS file system by viewing the disk information directly. If so, you may need an NTFS driver for Mac so that you can rearrange the space of this disk by partitioning it in Disk Utility.

Solution 2:Enable Show All Devices in Disk Utility

What if your external disk is not formatted with NTFS but some other file systems like Mac OS Extend and FAT, how to fix this issue then? Well, it's likely that the Partition option is greyed out in Disk Utility because you select the wrong item. You can't partition a volume (Even though the Partition option is highlighted for APFS volumes). Instead, you should select the disk drive when you want to partition a disk, and the following steps would be helpful.

1. 1. Open Disk Utility like you usually do.
2. 2. Click the View icon at the upper left, and then choose Show All Devices in the context menu.
3. 3. In the left sidebar, you should select the name of the external drive instead of the single volume.
4. 4. Then the Partition feature will not be greyed out and you can click it to partition your disk now.

How to fix when Erase hard drive greyed out in Disk Utility?

Another problem you might meet in Disk Utility is that you can erase a disk because the Erase option is greyed out. Usually, it happens when you try to erase an internal drive, which is reasonable because you can't erase the startup disk that you are currently running. Then if you want to install a new OS, or if you need to erase personal data before you donate your Mac, how can you erase a system volume?

Solution:Erase the disk in macOS Recovery mode

1. 1. Reboot your Mac and immediately press and hold Command + R to boot your Mac in macOS Recovery mode.
2. 2. Then choose Disk Utility in macOS Utilities.
3. 3. Select the volume you want to erase and click on Erase as usual.

Note: Be sure you have an up-to-date backup of your important files and data. But if you lost some important data in this process, you can try iBoysoft Data Recovery for Mac to recover your data.

Conclusion

However, if your external hard drive is greyed out in Disk Utility, and the disk information and the storage capacity is not even showing up correctly, the disk may die from physical damage. If this is the case, you can try your luck by sending it to a disk repair service.

It will be great if this article has helped you repair the external hard drive that is greyed out in Disk Utility.

Disk Utility on Mac is an inbuilt utility which is used to manage internal and external disk storage. The macOS Disk Utility can help you format disk, manage volume of the disk on Mac. It has several important functions which can be very useful for disk repairing. If you want to repair Disk issues using Disk Utility on Mac, the solution lies in this blog.

Disk Repair Utility For Mac

What Does First Aid Do On Mac Disk Utility?

Disk Utility on Mac has a First Aid feature, which helps you fix issues with its storage. First Aid can always keep your Mac in good health and resolve disk storage issues. You can use First Aid to fix a bunch of disk issues, such as error messages. If your system shows any unusual behavior or the disk seems corrupted, you can run First Aid to fix Mac’s disk issues.

How Do You Get To Disk Utility On A Mac?

Disk Utility on a Mac can’t be accessed directly from System Preferences. If you want to learn how to open Disk Utility on Mac follow the steps given below-.

Step 1: Go to Finder’s menu bar, and click on Go.

Step 2: From the drop-down menu, click Utilities.

Step 3: In the Utilities tab, locate and click Disk Utility to manage your Mac disk. This is how to open Disk Utility on Mac.

How Do I Repair My Mac Hard Drive With Disk Utility?

Before you start repairing a Mac hard drive with Disk Utility, we suggest taking a backup of your data. To fix disk on Mac you can open Disk Utility with the method shown above.

Step 1: Restart your Mac.

Step 2: Open Disk Utility.

For repairing disk on Mac, you have to open Disk utility first.

Step 3: Here, you will see the macOS disk status. It will display the used and unused disk’s portion along with the details.

Step 4: Locate the First Aid button from on top menu and click on it.

A note will appear on the screen before you start disk repair on Mac. This will be locking the Disk for a while as it will be in use by Disk Utility to check for issues. while repairing disk on Mac, it can not be used.

Once done, you can restart your Mac, and you will see that disk-related issues have been resolved using macOS Disk Utility.

Verdict-

Disk Utility is used to repair disk errors on Mac related to the hard disk drive formatting and structure. It comes with a First Aid feature for a quick repair of disk issues on Mac. Use it regularly to eliminate any issue turning into a bigger problem. This post tells you how to open Disk Utility on Mac and then how to repair disk on Mac using First Aid tool.

Additionally, to manage the clutter and recover storage space, you can get a third-party tool, Disk Cleanup Pro, to improve Mac’s speed and performance. Get this tool for your Mac from the download button below –

We hope this article will help you understand how to repair a disk on Mac. We would like to know your views on this post about macOS Disk Utility. Your suggestions and comments are welcome in the comment section below. Share the information with your friends and others by sharing the article on social media.

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