How to Fix Seagate External Hard Drive Not Working On Mac

External hard drives have emerged as a lifeline for storing and transmitting massive amounts of data in our fast-paced digital world.

For its dependability and performance, Seagate has been one of the most widely used and reputable brands. However, if their  Seagate External Hard Drive Not Working On Mac time to time, Mac users could sometimes run into annoying situations.

Although there are seldom any technical issues when using Seagate external drives with Mac computers, they may nonetheless happen for a variety of reasons.

The external drive often encounters issues such as not being detected, not mounting on the desktop, and poor data transfer rates.

This troubleshooting guide seeks to provide workable fixes for these problems and assist Mac users in getting their Seagate external hard drives back up and running efficiently.

We will look at step-by-step methods to identify and fix issues that might occur while using Seagate external hard drives on Mac computers, including checking hardware connections, confirming software compatibility, and using disc utility tools.

Overview of the issue with Seagate External Hard Drives not working on Mac 

Overview of the issue with Seagate External Hard Drives not working on Mac 

Seagate external hard drives have established a solid reputation in the field of data storage solutions because of their dependability and efficiency.

However, when these drives have operational issues, Mac users are noticeably concerned. The most frequent problems are slow data transmission rates, system non-recognition, and desktop mount failure.

Although Seagate discs are often compatible with Mac computers, several technical issues could prevent them from operating without interruption.

This article gets to the heart of the matter, offering a thorough description of the difficulties Mac customers have while using Seagate external hard drives and exploring efficient troubleshooting methods to resolve these issues.

Common Causes for the Issue and Possible Solutions

There may be a variety of reasons why Seagate external hard drives on Mac computers have issues.

One frequent reason for non-recognition or sporadic connectivity problems is a loose or defective connection between the disc and the computer’s USB port.

Compatibility issues resulting from file system formats that MacOS does not support might also be to blame.

Additionally, outdated or incompatible device drivers might impair the drive’s performance. Repositioning the cables, formatting the disc with a suitable file system, and upgrading drivers or firmware are often necessary to fix these problems.

Mac users may get their Seagate external hard drives back to working perfectly on their computers by addressing these typical issues and finding the right solutions. 

Step-by-step Instructions to Troubleshoot the Issue

Sure, here are the steps to troubleshooting Seagate external hard drive issues on a Mac:

Check Physical Connections: Check that the USB or Thunderbolt cable connecting the external hard drive to your Mac is securely connected on both ends. To rule out any connection issues, try a different cable or port.

Verify Power Source: Confirm that the external hard drive is powered on. If your drive requires an external power source, make sure it is properly connected.

Test on Another Mac or PC: Connect the Seagate external hard drive to another Mac or PC to see if the problem is with the drive or the Mac. If it works fine on another device, the issue could be with your Mac.

Check Disc Utility: On your Mac, launch “Disc Utility” (Applications > Utilities > Disc Utility). On the left sidebar, look for the Seagate drive. If it appears but is unmounted or has errors, attempt to repair it by selecting the drive and clicking “First Aid.”

Ensure File System Compatibility: Check that the external hard drive’s file system is compatible with macOS. Typically, Macs support the “Mac OS Extended” or “APFS” file formats. Consider backing up the data and reformatting the drive if it is formatted with a different file system (e.g., NTFS). 

Update Software and Drivers: Check Seagate’s website for any firmware or driver updates for your specific external hard drive model. Installing the latest updates can resolve compatibility issues.

Reset NVRAM, PRAM, and SMC: Resetting the Non-Volatile Random Access Memory (NVRAM) or Parameter RAM (PRAM) and the System Management Controller (SMC) can help resolve certain hardware-related problems. Instructions for resetting these can be found on Apple’s support website.

Try Third-Party Software: In some cases, third-party software may be necessary to enable full read/write access to external drives formatted in non-Mac-compatible file systems.

Contact Seagate Support: If none of the above steps resolve the issue, reach out to Seagate’s customer support for further assistance or consider the warranty options if the drive is still covered.

By following these step-by-step instructions, you can effectively troubleshoot and resolve common Seagate external hard drive issues on your Mac, ensuring seamless data access and storage.

Also: How Does SSD Store Data Without Power? Get the Facts Here

Things to Consider when Buying an External Hard Drive for your Mac 

Things to consider when buying an External Hard Drive for your Mac 

To guarantee compatibility and the best performance when buying an external hard drive for your Mac, many important things need to be taken into account.

To start, make sure the drive is set up to function with macOS; ideally, it should be in “Mac OS Extended” or “APFS” format. Choose a size that fits your usage habits while taking into account the storage space required to meet your data needs.

Choose between HDDs and SSDs for quicker data access and more affordable solution.  Make sure.

Make sure that the connection choices, such as Thunderb3.0 or 3.1 USB 3.0/3.1, are compatible with the ports on your Mac by checking them.

Additionally, look for a respected company with a reputation for dependability and customer service, and study user reviews to get knowledge about actual performance.

Also: What Does 128GB SSD Mean

How to Backup your Data before Troubleshooting the Issue 

How to Backup your Data before troubleshooting the issue 

Before proceeding with troubleshooting the issue with your Seagate external hard drive on your Mac, it’s essential to back up your data to prevent any potential data loss. Here’s how you can do it:

Select a Backup Method:  Decide whether you want to back up your data locally (to another external hard drive or a Time Machine backup) or use cloud-based solutions like iCloud or third-party backup services.

Organise Your Data:Sort and organise your files to ensure you back up only the essential data, optimising the backup process.

Time Machine Backup (macOS): If you have an external hard drive compatible with Time Machine, connect it to your Mac and enable Time Machine to perform automatic backups.

Manual Backup:Alternatively, you can manually copy and paste important files and folders to another external hard drive or a cloud storage platform.

Verify the Backup: After the backup process completes, double-check that all your essential data is successfully copied and accessible on the backup destination.

By following these steps, you can safeguard your data and proceed with troubleshooting your Seagate external hard drive issue on your Mac with peace of mind.

Also: How To Install Software In An External SSD | Tips & Guidelines

Tips on How to Prevent this Type of Issue in the Future 

To prevent potential issues with Seagate external hard drives on your Mac in the future, consider the following tips:

  • Regular Backups: Maintain a consistent backup schedule to ensure your data is always protected and easily recoverable if any problems occur.
  • Safe Ejection:To avoid data corruption, always properly eject the external hard drive before disconnecting it from your Mac.
  • Keep Software Updated: To ensure compatibility and optimal performance, keep your Mac’s operating system, firmware, and Seagate’s drivers and firmware up to date.
  • Quality Cables: To avoid connection issues, use high-quality USB or Thunderbolt cables.
  • Proper Handling: Handle the external hard drive carefully, avoiding physical shocks or drops that could damage it.
  • Avoid Overloading: Avoid filling the drive to capacity, as this can cause performance issues.
  • Protect from Malware: To protect your Mac and external hard drive from potential malware threats, use reputable antivirus software.

By taking these precautions, you can extend the life and reliability of your Seagate external hard drive and reduce the likelihood of future problems.

Conclusion (Seagate External Hard Drive Not Working On Mac)

Seagate external hard drives provide a convenient storage solution for Mac users, but they are not without flaws.

Users can efficiently address these issues and restore seamless functionality by understanding common causes and implementing troubleshooting steps.

Furthermore, when purchasing an external hard drive for a Mac, factors such as compatibility, storage capacity, connectivity options, and reputable brands ensure a successful and dependable investment.

Furthermore, regularly backing up data is critical to protect against potential data loss during troubleshooting.

With the right precautions and preventive measures, Mac users can have a trouble-free experience with their Seagate external hard drives, ensuring secure data storage and efficient performance in the long run.


My Mac is not recognising my Seagate external hard drive. What should I do?

Begin by inspecting the physical connections, making sure the cable is securely plugged in. Check the drive on another Mac or PC to see if the problem still exists. Additionally, use Disc Utility to check for errors and unmount the drive.

Can I use a Windows-formatted Seagate external hard drive on my Mac?

Yes, you can use a Windows-formatted Seagate drive on your Mac, but read-only access may be required. Consider using third-party software such as Paragon NTFS for Mac to gain full read/write capability.

How can I improve data transfer speeds on my Mac with my Seagate external hard drive?

To improve transfer speeds, connect your Mac and Seagate drive via a compatible interface such as USB 3.0 or Thunderbolt. Also, ensure that the file system on the drive is optimised for macOS, such as “Mac OS Extended” or “APFS.”

Is it necessary to format my new Seagate external hard drive before connecting it to my Mac?

To ensure smooth performance, format the drive to a macOS-compatible file system, such as “Mac OS Extended” or “APFS,” before connecting it to your Mac. 

How frequently should I backup my data on my Seagate external hard drive?

It is best to back up your data on a regular basis, preferably on a regular schedule, or whenever you make significant changes to your files. This protects your data in the event of unexpected problems or failures.

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