If you failed to format the SD card in the end after trying the above methods, you'd better go to the SD card manufacturer for professional help since it may suffer some physical damage. However, reformatting will wipe all the data on this SD card. If not you can find Disk Utility in the menu bar: click Utilities then Disk Utility. To mount an NTFS-formatted SD card in read-write mode on Mac, you can choose to format it into a macOS-compatible format, such as FAT, FAT32, exFAT, HFS+, and APFS. Depending on how you started Recovery Mode, you may be presented with the option to start Disk Utility right away, as seen above. Optionally, you can run Disk Utility First Aid to repair its software issues if it has some. To get started, click the Disk Utility option. If you still can't format your card in Disk Utility, check the physical connection between the SD card and the Mac. Please be noted that if you haven't backed up the important files on your SD card, back up them first before formatting to avoid data loss. To disable the SD card reader write protection, slide the lock up to the unlock position. Find the lock button on the SD card adapter that is inserted by your SD card. To check or disable the write protection on your SD card adapter, do the following: The same applies to your SD card reader or adapter. Click Show all devices from the drop-down menu.

Open Disk Utility from the Launchpad or Applications. Let me walk you through the mounting process. You can use the Disk Utility to mount the drive manually. If you have an M1 or M2 Mac you need to press and hold the power button until the Options menu. The external storage drive is not mounted on a Mac computer. Maybe the problem is your SD card reader or adapter.īasically, you can find the physical write protection switch on all standard SD cards. If you have an Intel Mac hold down Command + R until the Apple logo appears. Generally, the common reason for an SD card showing the 'The operation couldn't be completed' error on Mac is that it is physically locked. The error message showing 'The operation couldn't be completed' may appear when you are formatting the external drive, USB flash drive, SD card, etc in Mac's Disk Utility app.

Reformat disk mac