It can also happen if you are switching between using the drive on a Mac and a Windows PC. No matter the reason why, this can be a very frustrating thing to deal with, especially if you have just backed up a large amount of files onto your new drive.
- How to solve external hard drive read-only without formatting on Mac?.
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The first thing you will run across when you search for a read-only external hard drive on a Mac is the suggestion to reformat it. You can check by either trying to copy a file to it or right clicking on it in your Finder , selecting Get Info , and making sure the permissions have changed to read and write. But most of the time, this will solve the problem and allow you to use your external hard drive freely between your Mac and PC.
Fix External Hard Drive 'Read Only' Error on Mac Without Losing Data
One way to prevent this issue from happening with your Seagate or other external hard drive is to set up your external hard drive as specified in the directions that come with the product. Optionally, enter a name for the drive in the "Name" field.
- How to Remove Read Only on Mac External Hard Drive without Formatting!
- How to Fix a Read Only External Hard Drive on a Mac.
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Click "Security Options" if you want to completely erase existing data by overwriting it once, seven times or 35 times. The more times the data is overwritten, the more secure the format, but the longer it takes.
Solving read-only conditions for external hard drives
Make your selection and click "OK. NOTE: After formatting, the existing data will be gone.
Make sure to back up any important data before formatting the drive. If you'd like to cancel the subscription to this article, follow the confirmation link from the email we've just sent you.
Toggle navigation Knowledge Base Knowledge Base. Unable to write on the external hard drive with NTFS file system 42 users found this article helpful. Unable to write on the Seagate Backup Plus Drive. If the issue still persists please change device file system: Make sure the device is on the Mac side.