Fixed: External Hard Drive Not Mounting on Mac

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Most individuals today choose to store their data and files (such as photos, music, papers, etc.) on a computer or external hard drive. Mac laptops' performance and data storage benefits are guaranteed by their hard drives and SSDs. However, there have been situations where customers have experienced problems, such as the disks failing to appear in Disk Utility, Finder, or the Desktop after being plugged into a Mac.

When you connect an external disk to a Mac, it is usually mounted automatically. Yet, sometimes it does not, and the cause is typically incorrect preferences or tainted SMC data. In this article, we will show you some solutions to fix external hard drive not mount on Mac issue. TYou can try to fix the issue and mount the external disk using one of the following workarounds.

Why External Hard Drive Not Mounting on Mac?

How to Fix 'External Drive Not Mount on Mac' Issue?

If your external hard drive is acting up, you can try things to fix it. For best results, work through this list from start to finish and see if any solutions work for you.

#1 Restart and reconnect

All that's needed to fix your external drive may be a restart and a reconnection. It is because a system restart initiates a whole new user session, which means any issues or malfunctions experienced in the prior session are forgotten.

Also, we advise that you exit the Finder by using the "Force Quit" option. Doing so will relaunch the file explorer, which may facilitate the system's mounting of the hard disk. Below is the precise procedure you could take:

1. Get rid of your external hard disk by unplugging it.
2. Just reboot the machine.
3. Bring up Finder on your computer.
4. While holding Shift, select the Apple menu item.
5. Next, we have the Force Quit Finder.
6. Your external drive must be reconnected.

#2 Tweak your Mac's Preferences or Settings

If your Mac's external hard disk isn't mounting, you can try reverting to the factory defaults. The device's file system may be restricted from normal use if certain default settings are selected.

To modify your Mac's preferences, use Finder. Here's What to do:

1. First, select Finder from Dock's upper menu bar. To proceed, select Settings from the menu.
2. Choose the General tab in the text box.
3. Third, select "External disks" from the drop-down menu labeled "Display these things on the desktop" by clicking the checkbox next to it.
4. Fourth, select the Location tab in the sidebar. Put a checkbox next to "External Drive" in the Sidebar section.

5. Fifth, type "Disk Utility" into Spotlight by pressing the Command + Spacebar.
6. Choose "Show All Devices" from the Disk Utility display menu. To see the external drives, click the "Show" button now on the sidebar.

#3 Resetting your Mac's Firmware

A computer or other hardware device's ROM stores instructions for its operation, often known as firmware.

The next step to fixing unmountable hard disks on Mac is to reset the NVRAM and PRAM. If you want to accomplish this, please follow the steps outlined below.

How to Reset PRAM/NVRAM Firmware?

You can also reset PRAM/NVRAM on Intel Mac and check if the issue could be fixed (It's not necessary for Apple Silicon Mac as a restart is enough):

1. In the first step, disconnect the external hard drive from your Computer.
2. Secondly, power down the Mac.
3. Hold Command, Option, P, and R, and press the Power button.
4. Keep holding until you hear the starter chime twice (or when you see the Apple logo for the second time).
5. Once you have reached Mac's desktop, reattach the drive.

#4 Disk Utilities Drive Mounting

Disk Utility is a crucial part of macOS since it allows you to monitor, modify, and enhance your disk's health. Also, this program allows you to attach an external drive to your Computer forcibly.

Learn how to launch Disk Utility directly from Spotlight:

1. Connect the drive.
2. To open Spotlight, press the Command + Space keys.
3. Input "Disk Utility" and choose it.
4. Choose your external hard drive from the menu on the side.
5. Choose Mount and press Mount.

#5 Use third-party software to mount a drive on Mac

If the methods listed above can't solve this issue or does not work on Mac with Apple silicon, you can try a NTFS for Mac software to help you securely mount a drive on Mac. Follow the steps below:

1. Download and install Donemax NTFS for Mac on Mac.
2. Connect the external hard drive on your Mac.
3. Open Donemax NTFS for Mac on Mac, find the hard drive which can't mount.
4. Click on Mount button. Then the drive will mount on your Mac.

#6 Reformat the hard drive on Mac

If the above methods cannot fix unmounted drive on Mac, you may have to reformat the external hard drive. You can do it in Disk Utility. Just select the unmounted external hard drive and click the Erase button. Assing a new name and format if necessary. Then click the Erase button again to format the drive.

🚨 Note: If you format the external hard drive, the data stored on the drive will be erased. If there are important files on the drive, you can try to recover the files first before formatting the drive.

To recover the data from the unmounted hard drive on Mac, just download a Mac data recovery application, like Donemax Data Recovery for Mac to scan the formatted/initialized drive and recover the lost data.

Following the steps below to recover lost data from the not mounting external drive with the software:

Step 1. Launch the data recovery software and connect the unmounted external hard drive to Mac. Choose the drive in the software.

Step 2. The software will start to scan the drive after clicking the Scan button. It will quickly scan the drive first and then automatically scan the drive deeply to search for lost data in sector level.

Step 3. After the scanning process is finished, you can check the found files and founders. Before you recover the files, you can also preview them to confirm if they are recoverable. At last, select the wanted files and click Recover button to save the files to another drive.

FAQs about Fixing Not Mounging Drive on Mac

Conclusion:

The issue of an external drive not being recognized by a Mac is a common one and one that numerous users have voiced. There are several reasons why a Mac might not recognize a given storage device, whether it be an external hard drive, USB flash drive, SD card, or even an internal hard disk. In this article, we discussed the common causes of a non-functioning hard disk on a Mac and offered some helpful remedies to these problems.

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