![]() ![]() ![]() Click Format to initiate the formatting processĭisk Utility will verify and repair hard drive errors and plausibly fix the read-only issue.Īlso Read: Repair your macOS Mojave 10.14 Start-up DriveĮrror, there’s a possibility that you forgot to back up the data stored on the hardĭrive before erasing it or the backup doesn’t contain all the data.Select APFS or Mac OS Extended (Journaled) alongside the format option.On the pop-up dialog box, type the name of the formatting drive.Select the external drive from the sidebar and click the Erase tab.Go to Finder > Applications > Utilities > Disk Utility.If the external hard drive is in NTFS format, erasing it to a macOS compatible file system format should fix the read-only issue.Įrase the external storage drive, as follows: Warning: Back up the files on the Mac external hard drive before erasing it. How to Resolve Mac External Hard Drive Read-Only Error? Formatting Error: If the external hard drive is not erased correctly and has formatting errors, then macOS may mount the drive but may not allow writing data on to it.Permission Settings Issue: If your macOS could not recognize the access permission settings for your external hard drive, then the system will either prevent access or provide read-only permission to the external hard drive.NTFS is the proprietary file system of Windows and is not compatible with macOS. Mismatched File System: If your external hard drive is in the NT File System (NTFS) format, then macOS treats the drive as read-only.Reasons for an External Hard Drive ‘Read Only’ State So, what might be the reasons behind this read-only state? The following section describes in detail. If the drive is in read-only state, then you can only read data from the drive, but cannot write data on to it. ![]()
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