Is 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.
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 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.
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.
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:
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:
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.
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:
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:
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:
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.
- Insert SD card in the reader.
- Open Terminal app using launchpad or use cmd+space and type “terminal”.
- Type “diskutil” list to find your SD card.
- Look for “external” and match the storage capacity.
- For 32 GB or smaller cards, type sudo “diskutil eraseDisk FAT32 SDCARD MBRFormat /dev/disk4”.
- For larger than 32 GB cards, type “sudo diskutil eraseDisk ExFAT SDCARD MBRFormat /dev/disk4”.
- Enter your password if required.
- Wait for the command to complete.
- Insert your SD card into the card reader.
- Open the Disk Utility app.
- Select your SD card.
- Click the "First Aid" button.
- Click "Run" and wait for completion.
- Safely eject SD card.