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. Optionally, you can run Disk Utility First Aid to repair its software issues if it has some. 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. exFAT breaks the partition size limit of FAT32, supporting huge single partitions that are larger than 64GB. Is exFAT good for external HDD Yes, sure. For Windows and Mac, exFAT is the best format for an external hard dive. To check or disable the write protection on your SD card adapter, do the following: For Windows PC only, NTFS is the best for an external hard drive. The same applies to your SD card reader or adapter. The best way to do this is to format the drive, which both erases the drive and prepares it for storing data by mapping out bad sectors, creating address tables for locating the data on the. Maybe the problem is your SD card reader or adapter.īasically, you can find the physical write protection switch on all standard SD cards. 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.
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