How to Fix Seagate External Hard Drive Not Mounting on Mac Issue

When you connect your Seagate external hard drive to Mac, and Disk Utility shows Seagate external hard drive not mounted on Mac, you are unable to access the files stored on it.

This article will discuss how to fix the issue of Seagate external hard drive not mounting on Mac and provide effective ways to recover data from an unmountable hard drive.

Using Software to Uninstall WD External Hard Drive Recovery

When you come across issues like inability to access data from Seagate hard drive on Mac, such as the common unmount error “com.apple.DiskManagement.disenter error -119930868,” you might feel at a loss.

However, don't panic – data recovery software can help you out. One reliable option is the Data Recovery Wizard for Mac tool that can access the stored data on an unmountable Seagate drive and provide recovery options to help users save their stored files.

The software is worth it for its scanning process alone, which can quickly and accurately locate lost data. You can even preview all recoverable files on an unmounted Seagate drive, including photos, videos, documents, and more. Here are the steps to perform Seagate file recovery on Mac:

Step 1: Search for the missing file

Connect the external hard drive to your Mac correctly. Launch the Data Recovery Wizard for Mac, and select the external hard drive. Then, click “Search Lost Files” to look for any lost or deleted files on your external device.

Note: Before you recover data, it's recommended to click “Disk Backup” from the left sidebar and create a backup of your external hard drive to prevent further data loss. After backing up the external hard drive, the software can recover data from the backup of the external hard drive, and then you can remove the external hard drive and use it again.

Step 2: Filter and locate the missing file

After the scan, all file types will be displayed on the left. Select a file type to look for the files you need from the external device.

Step 3: Preview and recover

Click on the file to preview it, select the files you wish to recover, and hit the “Recover” button. You can save your data to both local and cloud drives.

Fix Seagate External Hard Drive Not Mounting Issue with Disk Utility

If your external hard drive keeps disconnecting from your Mac, usually, re-mounting the Seagate hard drive will solve the issue. Normally, the operating system mounts the external hard drive automatically when you plug it in.

Follow the steps below to mount Seagate hard drive on Mac manually:

Step 1: Open Finder > Applications > Utilities, and launch Disk Utility.

Step 2. To access a drive that is not currently mounted in Disk Utility, right-click it. Choose the “Mount” option to force mount an external hard drive on Mac.

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Repair Seagate External Hard Drive with Mac First Aid

While mounting Seagate hard drive through Disk Utility, you may encounter mount errors like "com.apple.DiskManagement.disenter error 0. " In such condition, you should run First Aid to fix your unmounted Seagate hard drive.

Step 1: Click the Launchpad icon in your Dock, then find the "Others" category.

Step 2: Search for and open “Disk Utility.”

Step 3: Select the unmounted Seagate portable hard drive and click on “First Aid”First Aid at the top. Then choose “Run” to repair the disk.

Step 5: Wait for the process to complete, and then click Finish.

If you see that First Aid found corruption that needs repaired, you should repair disk errors by clicking "Repair." Assuming the First Aid process fails, read on to fix this issue.

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Disk Utility First Aid Process Failed [With 5 Verification Methods]

This guide shows how to fix the "First Aid process failed" error and provides a solution for data recovery when needed. Read More >>

Reformatted Seagate hard drive not mounting after installation

If none of the above solutions work, you can consider formatting the Seagate external hard drive to fix the issue.

Here is how to do it:

Step 1: Connect the hard drive to your Mac and search for “Disk Utility” in Launchpad.

Step 2: Select your Seagate drive and choose the “Erase” option.

Step 3: Change the name of the disk, and choose a format that's compatible with your Mac. When you've selected a format, click “Erase.” Click “Done.”

Conclusions

There are several reasons why your Seagate external hard drive might not be mounting on your Mac, but there are also a few troubleshooting techniques you can try if it's not showing up. If your drive isn't appearing, attempt the methods outlined in this article: try clicking “Mount,” run First Aid, or format the drive by clicking “Erase.”

If you experience data loss during a connection, you can use the Data Recovery Wizard for Mac tool to retrieve your files.

Seagate External Hard Drive Not Mounting on Mac: FAQ

Here are some common issues regarding Seagate external hard drives not connecting properly to a Mac:

1. Why won't my Seagate hard drive mount on my Mac?

If your Seagate drive isn't mounting on your Mac, check the USB or cable connections and try testing it in another port to ensure it's receiving power. Also, verify if the drive is visible in Disk Utility. If not, it could indicate a damaged file system or an impending hardware failure. Attempt to repair or format the drive using Disk Utility. It's also advisable to test the drive on another computer to isolate the issue.

There could be several reasons why your Seagate hard drive is not showing up, including incompatible drivers, incorrect formatting of the disk, or disabled display settings, among others.

To resolve this issue, try reconnecting the drive, updating the disk software with Disk Utility, or formatting the disk.