Oct 24, 2019 Mac mini introduced in early 2009 or later iMac introduced in mid 2007 or later Mac Pro introduced in early 2008 or later Xserve models introduced in early 2009. To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu. If your Mac isn't compatible with OS X Yosemite, the installer will let. Jun 16, 2010 I currently own a canon 7D with a 16gb CF card i had taken numerous photos and vidoes on the card from my graduation and a birthday party but now i seem to have a problem my original CF reader turned out to be damaged and in turn ( i believe it damaged my CF) my CF card won't read in the 7D or in another CF reader i purchased today both of them.
Summary: Is your SD card not working on Mac? Mac won't recognize SD card? Mac is not reading SD card? In this article, we will help open your SD card and regain access to the files.
Accidents happen at any time. When your SD card is not working properly, you can't open and access the files stored the SD card.

As you see SD card is not readable by your Mac, those are possible questions in your mind. Why is Mac not reading SD card and SD card not working? How do I get my Mac to recognize my SD card? How to do SD card data recovery?
This passage is a complete SD card troubleshooting guide to fix SD card not working issue, and recover lost data from SD card.
- Table of contents
- 1. How to use and open SD card on Mac?
- 2. How to fix Mac not reading/recognizing SD card?
- 4. How to prevent 'SD card not working' in future?
How to use and open SD card on Mac?
Apple dropped the SD card slot in MacBook Pro starting with 2016 model. While MacBook Air 2015 and later MacBook never included an SD slot.
If your Mac comes with a built-in SD card slot, you can insert a compatible SD card, avoiding using SD card that has a thickness greater than 2.1mm.
When inserting SD card, you should make sure that the metal contacts face down and point toward the computer. Then your computer will recognize SD card inserted into the card slot as a storage device. You can read and write to SD card just like any other external drive.
• How to fix Mac not recognizing external drives issue?
But if your Mac doesn't have an SD card slot, you need to buy an SD card adapter. Insert the micro SD card into the slot face up with the gold pins going first.
How to open an SD card on Mac?
Step 1: Open SD card in Finder.
Click the Finder app, you will see your SD card listed in the left pane and then view the contents of the SD card in the right pane.
Step 2: Safely eject SD card.
After you finish your work on the SD card, you can remove it properly. But before that, you need to make sure that all data transfer to SD media is completed. Then the SD card will work correctly next time. To eject the card, drag its icon on the desktop to the Trash. After the icon disappears from your desktop, you are safe to remove the card from the slot.
You should avoid removing an SD card while your Mac is sleeping. It could lead to data loss. Always wake your computer, save your work, and then safely eject the SD card.
How to fix SD card not working/recognized on Mac?
However, there are times when you insert SD card into Mac, the SD card won't show up on Mac. Or what's worse, SD card won't work on your Mac. You must have experienced a similar situation. Don't be panicked, as you are not the only person, many Mac users have encountered this problem:
I connected my SD card to transfer some necessary files and folders, but my card is not recognized by MacBook Pro. I thought to check my card properly and I connected that SD memory card to my friend's machine but again card didn't get recognized on his Mac machine. Maybe there is a problem with my SD card? Any solution to resolve the issue?
Wondering why the SD card is not recognized by Mac? Want to know how to fix this issue? Go on, please.
Why SD card not working on Mac?
SD cards are prone to be damaged. Here are 7 common reasons why an SD card isn't working on Mac.
- USB port is not working or damaged.
- SD card reader is not working.
- SD card is formatted incorrectly (the file system is not compatible with macOS)
- SD card driver is outdated.
- SD card is logically corrupted.
- There are bad sectors in the SD card.
- SD card is physically damaged.
In a word, you'll need to determine whether your SD card's error is due to a logical problem or a physical one. For the former, you can try to fix it by yourself, otherwise, you have to ask for help from a trained expert.
Methods to fix Mac not reading/recognizing SD card
As below, we have listed some feasible solutions to fix SD card not working/reading on Mac. You don't have to try them all, just work your way down the list until you find the one that works for you:
SD card not working scenario | Step-by-step troubleshooting |
---|---|
SD card showing up in Disk Utility, not on desktop | Check your Finder desktop preferences. Full steps.. |
SD card showing up in Disk Utility, but not mounting | 1. Restart your Mac 2. Check if SD card reader is not working. Full steps.. 3. Check for the connection issue 4. Check if SD card is locked. Full steps.. 5. Insert your SD card in different devices 6. Reset NVRAM/PRAM. Full steps.. 7. Mount SD card in Disk Utility. Full steps.. 8. Repair SD card via First Aid. Full steps.. 9. Format your SD card. Full steps.. |
SD card not recognized/detected by Disk Utility | 1. Restart your Mac 2. Check if SD card reader is not working. Full steps.. 3. Check for the connection issue 4. Insert your SD card in different devices 5. Reset NVRAM/PRAM. Full steps.. 6. Update the drivers on Mac. Full steps.. 7. Send SD card to an expert for reparation 8. Replace SD card with a new one |
Cf Card Reader Mac
Option 1: Check your Finder desktop preferences
On Mac, you can choose to show connected items on the desktop, including hard disks, external disks, connected servers. Therefore, if you don't set the preference to show your SD card on the desktop, it won't appear on Mac. Easy to understand, huh? Let's see how to show SD card on the desktop?
Step 1: Go to Finder > Preferences > General, make sure the 'External disks' option is ticked. This will make the SD card show up on the Desktop.
Step 2: Select the Sidebar tab on the top, make sure the External disks option under Locations is also ticked.
Option 2: Restart your Mac
Whether the issue is related to networking, graphics, slow performance, faulty programs or macOS issue, a simple reboot can fix a computer issue 80-90% of the time. It also works when external drives are not recognized by macOS.
When your SD card is not reading on Mac, you can try to remove the SD card and then switch off the Mac. Leave it for a few minutes, turn it back on, and try again.
Option 3: Check if SD card reader is not working
To access an SD card, you usually need a card reader. When your SD card won't work on Mac, the first thing to check is whether the card reader is working or not. It doesn't matter that you access the SD card by the built-in slot on your Mac or a third-party one. Simply follow these steps to check if the SD card reader is recognized or not.
Step 1: Simply click Apple Menu > About This Mac > System Report.
Step 2: Find Card Reader under the Hardware Microsoft updates for mac catalina. list.
Step 3: If the card reader works, you can see its Vendor ID, Serial Number, and some other product information. When your SD card is inserted, it should also be listed at the right with specifications.
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If unfortunately, the card reader is not recognized, it might be an SD card hardware issue. For a broken slot built-in your MacBook, you need to send it to a local Apple store for repair service. Instead, for a malfunctioned external SD card reader, you can simply replace it with a new one.
Option 4: Check for the connection issue
If the card reader is working fine, then you should check the connections. First of all, make sure you insert your SD card properly. (The metal contacts must face down and point toward your Mac). Secondly, you can test your SD card on a different card reader. If you can access the SD card then, it should be the card reader that has a problem.
Option 5: Check if SD card is locked
Another case for SD card not working on Mac is that the SD memory card is locked. When you try to write content to the locked card, you cannot modify the files on the locked SD card. To work on the SD card again, you need to safely eject the card and adjust the lock slider tab on the card to unlock the card. Then you can access the SD card after you reinsert it to the slot.
Option 6: Insert your SD card in different devices
Another very effective strategy that you can implement is to insert the SD card in different devices, such as phones, digital cameras, or other computers. For instance, you can remove the SD card from your Mac and insert it into your Android phone. If your SD card is still not detected or working on a phone, the card might be damaged or you need to try the following solutions.
Option 7: Reset NVRAM/PRAM
NVRAM/PRAM is a chip in Intel-based Macs used to remember the setting for your computer, including sound volume, display resolution, startup disk selection, time zone, peripheral devices and more. It's worth resetting whenever you find your computer's hardware acting in unexpected ways.
To reset NVRAM, you should shut down your Mac, then turn it on and immediately press and hold Option + Command + P + R. Keep holding down those keys for about 20 seconds. Then release the keys and allow your Mac to continue starting normally.
Option 8: Mount SD card in Disk Utility
After resetting NVRAM/PRAM, your SD card is still not recognized on Mac. You should go to Disk Utility again and see whether the SD card is listed. If you can see your SD card in Disk Utility, but the SD card is greyed out, that means the SD card is not mounting. Simply select the Mount option to see if the SD card will be mounted in Finder and desktop.
Option 9: Update the drivers on Mac
If the issue still exists, you can check whether the drivers on your Mac is renewed. If your Mac drivers are outdated, your SD card or other external hard drives will not be recognized by your Mac. Here are steps to update drives on Mac:
1. If you have upgraded to macOS Mojave, you should choose System Preferences from the Apple menu, then click Software Update to check for updates. If any updates are available, click Update Now to install them.
2. If you are using earlier macOS versions, just launch the Mac App Store, click the Update tab on the top and then choose the 'Update All'.
Option 10: Repair SD card via First Aid
Still, have no luck to get your Mac to read the SD card? The SD card may be corrupted and needs to be repaired. All portable hard drives have a limited life span, as wear and tear could bring bad sectors on the disk. Thankfully, macOS has a built-in repair tool - First Aid, which allows you to fix corrupted SD card on Mac.
Step 1: Go to Applications > Utilities > Disk Utility.
Step 2: Select the corrupted SD card and click 'First Aid' on the top.
Step 3: Wait until the reparation process finished.
Sd Cf Card Reader
Option 11: Format your SD card
If unfortunately, you receive the error message: 'Disk Utility can't repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files', the file system of your SD card is seriously damaged and you need to reformat it.
It is a successor to Mac OS Yosemite and forms on performance, and security more following in northern California, the final version and latest version of Mac OS X El Capitan was released under the name of OS X was announced by macOS Sierra, and the first beta Mac OS X El Capitan was released to developers on WWDC year 2015, by the passage of time Mac decided to publish new updates to the public. Mac OS El Capitan is the twelfth major release of Mac OS X, that now named as Mac OS X, the latest version is 10.11 for Apple Inc, desktop. Requirements:. Free el capitan download. Mac OS X El Capitan is one of the most famous operating systems for Macintosh computers.
Step 1: Recover data from SD card.
Reformatting will erase all data on the SD card, so please recover important data from SD card first.
• How to recover data from SD card on Mac?
Step 2: Format your SD card with Disk Utility.
• How to format an SD card on Mac?
Option 12: Send SD card to an expert for reparation
If your SD card can't be seen in Disk Utility at all after trying all above methods, it means the SD card has some hardware problem so that Mac can't detect it. In this situation, you have no choice but to send the SD card to an expert for reparation.
Option 13: Replace SD card with a new one
If the warranty of your SD card is still valid, it's most likely time to invest in a replacement or ask for a refund.
How to prevent 'SD card not working' in future?
Cac Card Reader For Mac
SD cards are easy to be damaged, but using them in the right way, corruption can be avoided to some extent. Read on for 7 effective tips to prevent 'SD card not working':
- Format the new SD card as soon as you get it. When you buy an SD card, you should format it on the device and make sure it is compatible with the device system.
- Always safely eject SD card from the device. On Mac, click on the Finder icon on the Dock. Locate the SD card from the left sidebar and click on the Eject icon next to the name of the SD card. As an alternative, you can drag the device to the Trash on the desktop to eject it. More specifically, you should avoid removing the SD card from the device when it is still accessed, such as transferring data or reading data, etc.
- Keep some space left on the SD card. Keep in mind that you should never run out of the space of your SD card.
- Turn off the device before removing the SD card. If you want to remove your SD card from a digital camera or mobile phone, you should ensure the device is entirely turned off. Otherwise, the SD card can easily be corrupted.
- Properly store your SD card in a safe place. Store the SD card in dry, cool space since dirt, moisture, and other factors could damage them.
- Stop using the SD card when getting any errors. As soon as you receive any errors when trying to access the SD card, such as “the disk you inserted is not readable by this computer”, you’d better stop all operations at once in case further damage will be made to the SD card.
- Install antivirus software and run it regularly. It’s important to scan an SD card for viruses and running antivirus software to remove any malware on your computer. In this way, you can prevent malware and virus from damaging your SD card.
Conclusion
How to deal with SD card not working or recognized on Mac? No matter what causes this problem, there are lots of potential solutions. You can begin by checking the connection and then try to repair the corrupted SD card. If your SD card is still not recognized by Mac, you should format the SD card on Mac to see if this fixes your issue.
If you experience any data loss issue during this process, the good news is that your data can still be recovered with iBoysoft Data Recovery for Mac. This free Mac data recovery tool can recover deleted/lost photos from SD card quickly and easily.
Should you have another suggestion to fix SD card not working or detected issue on Mac? Or have any questions when you are using iBoysoft Data Recovery for Mac? Please feel free to contact us by sending an email.
It is recommended that CFast card users regularly full format and refresh (sanitize) their card. Sanitizing the card returns the CFast card to a 'fresh' state by removing previous recording traces, which restores maximum video recording performance.
Note: Please ensure that sanitize is 100% complete prior to removing the card. If there are power interruptions or if the card is removed prior to completion, the card may not work properly in the camera. If this happens, users are directed to complete the interrupted sanitize and then sanitize once more so that a full sanitize is finished without interruption.
Download the Full Format and Refresh Tool for PCs
Windows Download
Software: Scanner and printer driver installer. Install ricoh printer driver. Printer and scanner installation software. Category: Color multifunction. Operating systems: Windows 10, 8.1, 8, 7 & Apple macOS 10.15 – 10.12 / Mac OS X 10.11.
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Mac Download (Compatible with Mac OS X Yosemite and El Capitan)
Mac Download(Compatible with Mac OS X Sierra 10.12.2 and above): Please refer to the installation notes below
Mac Installation Notes (for Mac OS X Yosemite 10.10 and El Capitan 10.11)
1. Download the installation archive to the location of your choosing
2. Open the archive file and follow the prompts to extract the 'sanitize_16' folder
3. Open the 'Sanitize_16' folder and run the 'Sanitizer' installation file
4. Follow the installation prompts (you must have Admin Password to install the program) and restart computer upon completion
Note: Restart is required for Yosemite but optional for El Capitan
5. After installation / reboot connect the CFast reader and CFast card to the computer
6. Navigate to applications Launch pad and open the 'Sanitizer' application
7. Select Full Format
Mac Installation Notes (for Mac OS X Sierra 10.12.2 and above)
1. Download and unzip the CFAST Sanitize tool package
2. Double click on the zipped file for it to unzip into a folder
3. Click on the 'sanitize.mpkg' package to launch the installer
4. Follow the installation prompts (you must have Admin Password to install the program) and restart computer upon completion
Mac Installation Notes (for Mac OSX High Sierra 10.13 - 10.13.1)
Please note: 10.13.6 and above is not supported at this time
1. Download the installation archive to the location of your choosing2. Open the archive file and follow the prompts to extract the 'sanitize 4.0' folder
3. Open the folder run the sanitize mpkg installer
Cf Card Reader For Macbook Pro
4. Follow installation prompts (You must be an admin to install)
5. Once installation completes reboot the mac
6. After reboot go into system preference > security & privacy > general.
7. 'Allow' permission for sandisk corporation
8. Reboot Mac
9. Navigate to applications Launch pad and open the 'Sanitizer' application
Cf Card Reader Macbook Pro
Cf Card Reader For Mac Yosemite Download
10. Select Full Format
Note: Following the format operation the card will need to be initialized by formatting in a camera or with the Mac Disk Utility
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