How to Fix Seagate External Hard Drive Read-only on Mac?

Posted by Katrina to NTFS for Mac on March 15th, 2018

I'm having a problem using my Seagate external hard drive. I only have permission to read files on my external hard drive, but I am not allowed to write or edit files on the drive when using Mac OS. Why this happened and how to fix Seagate external hard drive read-only on Mac?

Seagate is one of the most popular brands of storage devices all over the world and its external hard drive is favored by numerous customers. But sometimes, we are having trouble backing up or copying files to Seagate external hard drive and Seagate external hard drive becomes read-only. In fact, read-only Seagate external hard drive results from various reasons. This article will point out three common cases and offer different solutions.

Case 1: Seagate external hard drive is NTFS formatted

Most of time, when Seagate external hard drive is NTFS formatted, it turns to be read-only on macOS. Because by default, macOS only enables NTFS drive read support, but disables NTFS drive write support. (To make sure, we can go to Disk Utility and check the format information.)

Solution: Write to NTFS Seagate external hard drive with professional NTFS driver on Mac

In this situation, some professional NTFS for Mac software can help us write to NTFS Seagate external hard drive on Mac with ease. There are a great number of NTFS driver for Mac in the market. Here recommend two reliable ones.

1. NTFS Assistant: the cheapest NTFS for Mac in App Store

NTFS Assistant has excellent quality and charges at low price, which is the best option for us to read and write to NTFS external hard drive on macOS High Sierra 10.13/macOS Mojave 10.14/10.12 Sierra/10.11/10.10/10.9/10.8/10.7. With it, we can easily copy files to read-only NTFS hard drive on Mac and save files from macOS to a NTFS drive, etc.

Features of NTFS Assistant:

1. Very cheap.

2. Simple interface.

3. Support macOS Mojave 10.14/High Sierra 10.13/10.12/10.11/10.10/10.9/10.8/10.7.

Guidance to download and use NTFS Assistant

Step 1: Download and install NTFS Assistant from App Store >>.

Step 2: Download and install NTFS Assistant Helper >> to enable NTFS read-write access.

After installing both NTFS Assistant and NTFS Assistant Helper, NTFS Assistant has the ability to write to NTFS Seagate external hard drive on Mac.

2. iBoysoft Drive Manager: mount NTFS external hard drive, external drive & network drive

iBoysoft Drive Manager is a handy Mac tool that can help us mount NTFS external hard drive on macOS High Sierra 10.13/macOS Mojave 10.14/10.12 Sierra/10.11/10.10/10.9/10.8/10.7.

iBoysoft Drive Manager

Aside from writing to read-only NTFS external hard drive on Mac, iBoysoft Drive Manager is also a wonderful tool to manage external drives and network drives. It offers a menu bar from which we can mount, unmount and remount network drives and external drives with a single click. It automatically records the information of network drive at the first time we connect it to Mac, so network drive only need to be set up once and later can be directly mounted without bothering to input information again and again.

Features of iBoysoft Drive Manager:

1. Not only write to NTFS drive, but also write to exFAT, FAT32 drive.

2. Mount external drive, including external hard drive, USB drive, SD card, memory card, pen drive, etc.

3. Manage network drive with only one click.

4. Have fast speed when transferring bulky files.

5. Intuitive interface.

Write to NTFS Seagate external hard drive on Mac

Tutorial to write to NTFS Seagate external hard drive on Mac with iBoysoft Drive Manager

Step 1: Download and install iBoysoft Drive Manager on Mac.

Step 2: Launch iBoysoft Drive Manager and connect Seagate external hard drive to Mac.

Step 3: Write to Seagate external hard drive after getting notified that the drive is mounted successfully.

Case 2: Access permissions on Seagate external hard drive are not ignored

If our Seagate hard drive denies us access or restricts us to read-only activities, there is likely an ownership conflict. Being a multiuser operating system, macOS sets up access permissions for all files and folders on the system, including external drives.

Solution: Modify permissions on Seagate external hard drive in Finder

To regain full access, we must ignore ownership of Seagate external hard drive in Finder. Just follow the below steps to fix Seagate hard drive read-only on Mac:

Step 1: Select Seagate external hard drive on your desktop or in the Finder sidebar, and then press Command-I to get information on the drive.

Step 2: Click on the arrow that is at the left side of the "Sharing & Permissions" tab near the bottom of the window.

Step 3: Check the box to "Ignore ownership on this volume", or toggle it off and then on if it's already enabled.

Case 3: Check Seagate external hard drive for errors

Some formatting errors will cause Seagate external hard drive to be read-only. When this happens, we may see a warning when attaching the drive that states it is only being mounted in read-only mode.

Solution 1: Fix read-only Seagate external hard drive in Disk Utility

In this situation, we should use Disk Utility or other repair tools to check Seagate external hard drive for errors and attempt to fix them. Here is the guidance to repair read-only Seagate external hard drive in Disk Utility:

Step 1: Open Disk Utility.

Step 2: Select the read-only external hard drive on the left window.

Step 3: Click First Aid in the top center and choose Run.

Solution 2: Reformat Seagate external hard drive

If Disk Utility fails to fix read-only Seagate external hard drive, we should consider wiping the drive and repartitioning it.

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