Three Ways to Fix Error 72 on Mac Without Losing Data

Encountering the “Load Failure, Error 72” when connecting an external hard drive to your Mac can be frustrating. This error signifies a mounting issue where the system recognizes the hard drive but doesn't display it in Finder, thereby restricting access to your data.

Though the disk is visible in Disk Utility and System Report, attempting to mount it via Terminal returns an error message of “failed with 72,” thus limiting the ability to save or access data on the external device.

To address this issue, we present three practical techniques to resolve the Mac disk mount failure with error code 72, ensuring data recovery without losing any information.

How do I fix a hard drive that fails to mount and displays error code 72?

Encountering a mount failed error with code 72 on a Mac can be frustrating and worrying, especially when important data is involved. In such situations, resorting to a tool like the Data Recovery Wizard for Mac seems like a reliable option to retrieve data from a damaged hard drive. This program handles the intricacies of the error, allowing users to easily recover lost or inaccessible data.

Mac data recovery tools stand out due to their user-friendly design and robust recovery capabilities. By seamlessly integrating these software features, users can effortlessly address "Mount Failed 72" or similar error messages like "Mount: / failed 77" on their Macs without compromising data security and integrity.

Users can initiate the recovery process and restore data from an unmounted external hard drive with just a few simple steps:

Step 1. Launch the data recovery tool, select the unmounted volume, and click "Search Lost Files".

Step 2. The powerful software will deeply scan all recoverable data on the unmountable hard drive. Select the files you want by checking the checkboxes in front of them.

Step 3. Click "Recover" to retrieve files from the unmounted external hard drive and choose a secure location on your Mac to save them.

Moreover, the hard drive recovery tool can access the stored data on the disk that is failing to mount with the error “com.apple.DiskManagement.disenter.”

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Now that we've established the physical connection to the external hard drive is not at fault, let's explore three effective methods to resolve the issue of a Mac failing to mount and displaying error 72.

Solution 1: Check the USB port/cable and re-insert the disk

Before trying more complex methods, make sure that your external hard drive is properly connected to your Mac. This includes checking the USB ports and cable for any physical damage that might be preventing a connection.

Step 1: Address the Mac Mounting Issue

The first step in troubleshooting a Mac that fails to mount an external drive with 72 issues is to check the physical connection of the drive. First, unplug the disk from your Mac and connect it to another USB port.

Sometimes, the issue might be due to a loose connection or a faulty USB port. This method also applies when you encounter Mac error 119930868 with an external hard drive.

Step 2: Check the US port/cable

Next, check the USB cable for any signs of damage, like fraying or bending. If you find any, replace it with a new one. Also, make sure that both ends of the cable are securely plugged into your external drive and your Mac.

Step 3: Reinsert the disk

After you insert the disk and check all connections and ports, try mounting the external drive again on your Mac. If you still see the “Mount failed (72)” error, continue with these troubleshooting steps.

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Method 2: Force Mount the Disk via Terminal

If the external hard drive still won't mount, you can try using macOS's Terminal tool to fix the issue. Here are two methods for how to force mount a hard drive on Mac:

Using FSCK to Repair File System Errors:

First, open “Terminal” and type diskutil list, then press “Enter.”

Enter sudo fsck_hfs -fy /dev/diskxxx (replace “diskxxx” with the disk name and “hfs” with the appropriate file system).

Step 3: When you're done, restart your Mac and reconnect the external drive.

Mount the drive manually:

Step 1: Open the "Terminal" app.

Fix 3: Reformat the drive to a file system format compatible with macOS

If the issue is due to macOS incompatibility, format the disk to APFS or HFS+. Please note that formatting the disk will erase all data. It's recommended to back up important files or use a tool to recover files before formatting.

Of course, more can and should be done.

Backup Your Mac and Never Lose Data

Back up and restore your MacBook/iMac without using Time Machine, iCloud, or an external hard drive.

Please follow the steps below to format the disk:

Step 1: Connect the external drive to your Mac and open Disk Utility.

Click on "Disk Utility" to launch it.

Step 2 Choose View > Show All Devices from the menu.

Click on Show All Devices.

Step 3: In the sidebar, select “Storage,” then click the “Erase” button.

5. From the Scheme pop-up menu, choose GUID Partition Map.

Step 6: Choose a file system (such as APFS, Mac OS Extended, or exFAT) from the Format pop-up menu.

Step 7: Name the drive and, if you like, choose an “Erase Option” for security. Click “Erase.”

Conclusions

A "Mount Failed with Error 72" on a Mac can be frustrating, but there are ways to resolve the issue without losing your data. Try checking the USB port/cable connection, using terminal commands to force the drive to mount, or formatting the disk to a macOS-compatible file system. These approaches might do the trick.

However, reformatting will erase all data, so exercise caution. Users should back up important files before attempting repairs. Accidentally deleted or formatted content can often be recovered using reliable data recovery software, such as Data Recovery Wizard for Mac or similar tools.

Frequently Asked Questions (FAQ)

Here are some answers to questions regarding the Mac mounting failure with error 72:

1. How to fix a disk that won't mount on your Mac?

Check the cable connection, use Disk Utility to repair the disk, or, if the Mac drive won't mount, force it with a Terminal command. If these fail, hardware issues may require expert help or a new drive.

2. Why can't my SSD be mounted on my Mac terminal? This issue could be due to several reasons. Here are some possible solutions: 1. **Check the Connection**: Ensure your SSD is properly and securely connected to your Mac. If it's an external SSD, verify that the USB, Thunderbolt, or any other interface cables are functioning correctly. 2. **Restart Your Mac**: Sometimes, simply restarting your Mac might resolve the issue. 3. **Disk Utility**: Open Disk Utility, found in Applications > Utilities. Here, select your SSD and click the "First Aid" button to see if any issues can be repaired. 4. **Mounting Options in Disk Utility**: In Disk Utility, if your SSD appears grayed out or unselectable, it might not be mounted. Try clicking the "Mount" button to mount it. 5. **Check System Report**: Go to "System Preferences" > "About This Mac" > "System Report," then navigate to "Disks" in the left-hand menu. Here, you can see if your SSD is recognized and view detailed status information. 6. **Reformat the SSD**: If all else fails, you may need to reformat the SSD to a Mac-compatible file system, such as APFS or HFS+. However, note that this will erase all data, so back up important files beforehand. 7. **Hardware Failure**: If the SSD still won't mount, there could be a hardware issue. In this case, you should contact the manufacturer's support or seek professional assistance. If the problem persists, consider seeking technical support or consulting with an IT professional.

Your SSD might not mount on Mac Terminal due to file system corruption, driver incompatibility, or an SSD failure. Common unmount errors include:

• com.apple.DiskManagement.disenter Error 119930872
• com.apple.DiskManagement.disenter Error 49244
• com.apple.DiskManagement.disenter Error 0

You can resolve this issue by running disk utility software, updating your version of macOS and the SSD driver, or checking hardware connections.

Why isn't my Mac detecting my external hard drive?

Your Mac might not recognize an external hard drive due to a damaged connection, outdated ports, or an incompatible file system. You can try using a different connection or port, updating your macOS and drivers, or formatting the hard drive to a suitable file system.