How to Recover Data from a Corrupted SD Card on Mac: a Detailed Guide

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recover corrupted sd card macIs your Mac having trouble recognizing your SD card? Or maybe the files on the memory card display an error when opened? Well, it’s possible that you’re experiencing such issues because of SD card corruption. If that’s the case and you’re unable to access the data stored on your card, we have a solution for you.

In this article, we’ve covered everything that you should know to successfully recover a corrupted SD card on Mac.

Main Reasons for SD Card Corruption

What does it mean when your SD card is corrupted and why did it get corrupted in the first place?

If your SD card is corrupted, it typically means that the device has some kind of logical damage (for example, an error in the file structure). Such non-mechanical damage can be either self-inflicted or caused by a human error.

Note: If you suspect that your SD card is corrupted, it’s important to stop using it immediately. Continuing to use a memory card with such an issue may worsen the situation and increase the risk of overwriting data and, therefore, make it unrecoverable.

Here are the main causes of SD card corruption:

  • 🦠 Malware: Just like other removable media, SD cards can also get infected by a virus or malware. Almost any type of malicious code may cause undesired effects such as corruption, damage to the file structure, or data loss.
  • ✍🏽 Interruption of the read/write or formatting processes: If you interrupt an important process on your SD card (for example, by removing the card from your Mac while writing files), it can lead to severe consequences, such as data loss or card corruption.
  • 🔥 Physical influence: Exposure to heat, water, or high humidity can damage your SD card.
  • 🔌 Power outages: Power outages may interrupt the read/write processes on your card and therefore cause logical damage to the SD card and be the reason for data loss.
  • ⏏️ Improper removal of the SD card: It’s impossible to stress enough the importance of properly ejecting an SD card from a computer. If you simply disconnect the card from your computer, it can corrupt the file system on the SD card.
  • 💾 Aging: SD cards have a limited lifespan. Depending on how you use your SD card, it can last for 10 years or more. The older your memory card gets, the higher the chances of getting it corrupted.
  • Bad sectors: Extensive or improper usage can damage the SD card memory blocks. If that happens, your whole card can become inaccessible.

How to Recover Data from a Corrupted SD Card on Mac

Need help in doing a corrupted SD card recovery on a Mac? The data recovery methods described below are the best solutions for recovering files from an SD card.

Method #1. Use a Data Recovery Software

It’s possible to recover files from a corrupted SD card on a Mac using specialized data recovery software. However, this method will work only if your memory card is mountable and you can access the corrupted SD card on your Mac. If it’s impossible to connect the card to your computer, check out Method #2.

There are not many options when it comes to choosing a data recovery tool for restoring files from an SD card since not all applications support this type of device, and not all of them are compatible with the Mac operating system.

Our recommendation is Disk Drill since it’s user-friendly, reliable, and has a free trial version. Moreover, Disk Drill can restore over 400 file types, so it will be able not just to recover photos from a corrupted SD card on a Mac, but handle almost any type of file (whether it’s an image, video, audio file, etc.).

To minimize the chances of overwriting the lost data and preventing the corruption from worsening, it’s a good idea to clone your SD card by creating a DMG image of the data stored there and then using it to restore the files.

Here’s what you should do to recover a corrupted SD card on a Mac using Disk Drill:

  1. Download Disk Drill and follow the onscreen instruction to install it on your Mac.
  2. Connect the SD card to your computer and launch the app.
  3. Choose Byte-to-byte Backup from the sidebar on the left.byte to byte backup sd card disk drill
  4. Select the SD card from the list of available devices and click the Create backup button on the bottom right.
  5. Type in a name for the backup file near Save As and click the arrows near Where to select a preferred location. Click Save when ready.create byte to byte backup disk drill mac
  6. Once the process is finished, eject your SD card.
  7. Choose the Storage devices tab from the menu on the left.
  8. Click Attach disk image on the bottom of the window.attach disk image disk drill mac
  9. Select the DMG image that you’ve previously created and click Search for lost data to initiate the scan.
  10. Click Review found items to look through the files found by the application.preview found items disk drill
  11. Choose the files you want to recover or, if you want to recover all of the data, click the box on the top left of the file list to select all of the files.
  12. When ready, click Recover.recover files from sd card disk drill
  13. Choose a destination for the recovered files and click OK to confirm.

Method #2. Contact a Data Recovery Service

If the lost data has already been overwritten with other files on the memory card or the corrupted SD card won’t show up on your Mac, you can let professionals take matters into their own hands. Data recovery experts know how to make an SD card mountable again and can use advanced techniques to retrieve the lost data.

Cleverfiles Data Recovery Center is one of the best options out there since it’s a reputable company that has helped many with such issues. Also, they offer a free evaluation of the damaged device and won’t charge you if they fail to recover the data from your SD card.

Here’s what you should do if you choose to recover data from a corrupted SD card with a data recovery service:

  1. Contact the data recovery center and go over the problem you’re experiencing.
  2. Pack and send the SD card to the company’s lab.
  3. Receive a price quote.
  4. Let the center know that you wish to start the data recovery process if the price is acceptable.
  5. Get the recovered data shipped back to you on a new media.

How to Fix Corrupted SD Card on Mac

Once you’ve retrieved the data from your corrupted SD card, you can try to repair it. It’s incredibly important to extract the files from the memory card before moving forward with the repair process to avoid losing all of the data stored there.

So how to fix a corrupted SD card on a Mac? Here are the methods that may help if the corruption of the SD card is logical by nature.

Method #1. Run First Aid

Disk Utility’s feature called First Aid can check for corruption or errors and repair any device connected to a Mac, including an SD card. Follow these steps to repair a corrupted SD card on a Mac using First Aid:

  1. Connect the SD card to your Mac.
  2. Open the Disk Utility app (go to Launchpad and type Disk Utility in the search field).
  3. Select your SD card from the list of devices on the sidebar on the left.
  4. Click First Aid at the top of the window.
  5. Click Run to start the process.run first aid on sd card mac
  6. When the process is complete, click Done and eject your SD card.

Method #2. Check for Errors Using Terminal

If, after running First Aid, your SD card continues to show signs of corruption, you can use the Terminal app on your Mac to check for possible errors. However, this method is a bit more complicated since you’ll be using a command-line tool to see what’s the issue with your SD card. Here’s what you should do:

  1. Connect the SD card to your Mac.
  2. Launch Terminal on your Mac (go to Launchpad, type Terminal in the search field, and click the app’s icon to open it).
  3. Type in diskutil list and hit the Return key to view your drives’ identifiers.diskutil list on terminal mac
  4. Copy-paste the following command into the Terminal window: diskutil verifyVolume [your drive’s identifier]. Press the Return key to run the command.
  5. Look through the results to find out if the SD card is still corrupted.

Method #3. Format the SD Card

Formatting a corrupted SD card is an effective way to repair it. But it should be done only when you’ve successfully retrieved the data from the device since after you format the memory card, all of the files stored on it will get erased.

Follow these steps to format your SD card on a Mac:

  1. Connect the SD card to your Mac.
  2. Open the Disk Utility app (go to Launchpad and type Disk Utility in the search field).
    Select your SD card from the list of devices on the sidebar on the left.
  3. Click the Erase button at the top of the window.
  4. If you want, type in a new name for your SD card and choose a preferred format.
  5. Click Erase to format the SD card.format sd card on mac
  6. Once the process is finished, click Done.

Conclusion

Having to deal with a corrupted SD card can be pretty overwhelming. And even though there is not much that can be done to retrieve the data stored on such a device, the methods described in this article should help you achieve it.

However, even if you were able to recover data and fix the card, it’s better to replace the SD card. In such a case, it’s possible that the issue will reoccur, and by getting a new memory card, you’ll be able to protect yourself from all of the unnecessary stress.

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Romana Levko is a professional content writer with a strong interest in tech-related topics. Her main focus is on data recovery, Apple products, and cybersecurity. She spends her free time tinkering with her Mac and burning through her favorite music albums.
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12 years experience in software development, database administration and hardware repair.