How to fix/recover unreadable Micro SD card on Mac?

By Juno | Posted to Mac Data Recovery on January 17th, 2018 |

Summary: Have you encountered a Micro SD card unreadable/corrupted problem? The SD card not showing up/working on Mac? The SD card won't format? This post will offer you solutions to fix these issues. But before that, download free SD card data recovery software to recover data from unreadable/corrupted/damaged micro SD cards.

Table of contents
1. How to recover unreadable Micro SD card on Mac?
2. How to fix/repair unreadable Micro SD card on Mac?
3. What is an SD card and how to use it?
4. Why the Micro SD card is unreadable?

Micro SD card has been widely-used on phones, digital cameras and many other devices to save files. It has gradually become the easiest and most efficient way to expand storage capacity of devices. But sometimes, our Micro SD card may get damaged or have errors on it and become unreadable. When this happens, you can't access the card on phone, digital camera or computer. Here is a complain from a forum:

Last night, my phone just stopped recognizing my micro SD card, which unfortunately contained some important data. I tried the card in my Mac computer but it is not accessible with an error message: "The disk you inserted was not readable by the computer". Is there a program or method I can use to capture the data from the card even if it's not being recognized. Any advice is appreciated.

SD card is prone to corruption, leading to loss of all the stored photos, videos and audio files on Mac. When your Micro SD card becomes unreadable, you must be very eager to know how to fix unreadable Micro SD card as well as get lost files back. Read ahead!

How to recover unreadable Micro SD card on Mac?

Before fixing unreadable Micro SD card, you should firstly recover data from unreadable Micro SD card. The good news is that the lost data still remain on the card until it is overwritten.

Video tutorial: How to recover data from SD cards?

Things you should know before data recovery

When you realize you have lost data on your Micro SD card, stop all write operations immediately, including saving files, deleting files, reformatting the card. These actions will create new files which may write over the original data. If the old data have been overwritten, it's impossible to recover. Therefore, to increase the chance of data recovery, please take the card out of the camera or phone and find a professional data recovery tool.

Recover data from unreadable Micro SD card on Mac with iBoysoft Mac Data Recovery

iBoysoft Mac Data Recovery is the best free SD card data recovery software that can recover data from unreadable Micro SD card, recover deleted/lost files from SD card, recover data from formatted Micro SD card, recover data from unmountable Micro SD card, recover data from corrupted Micro SD card, recover data from encrypted Micro SD card, etc. It can recognize many file formats, including JPG, PNG, TIFF, MOV, MP4, and many RAW camera formats. This software performs memory card recovery on macOS 10.14/10.13/10.12 and Mac OS X 10.11/10.10/10.9/10.8/10.7.

Besides, iBoysoft Mac Data Recovery can also recover deleted photos, files, music files, videos, emails from hard drive, recover data from unreadable external hard drive, pen drive, USB flash drive, memory card, CF card, etc. It is read-only and safe to use which will never write to your drive during the recovery process.

Tutorial to recover data from unreadable Micro SD card on Mac with iBoysoft Mac Data Recovery

Step 1: Launch iBoysoft Mac Data Recovery.

Step 2: Select the unreadable Micro SD card and click "Next" to scan lost data on it.

Recover data from unreadable Micro SD card on Mac

Step 3: Preview the scanning results, choose files we need, and click "Recover" to get them back.

Recover data from unreadable Micro SD card on Mac

Step 4: Check to ensure you have got all lost files back.

How to fix/repair unreadable Micro SD card on Mac?

After successfully getting lost files back, we can fix unreadable Micro SD card on Mac without worries.

Fix 1: Connect the SD card to another computer

First of all, you should check what the matter is. Is it the problem with the SD card or your Mac computer? Just plug the SD card to another computer. If it is readable at this time, there is something wrong with your Mac. In this case, you should ask for help from Apple support. Otherwise, the card may be at fault.

Fix 2: Try a different SD card reader or slot

If you connect the SD card with a reader or slot, you should check whether it is damaged. Plug the card out and then reinsert it with a different SD card reader or slot to see if it works fine.

Try a different SD card reader or slot

Fix 3: Check if the SD card is BitLocker encrypted

The next thing is to check the incompatibility between the SD card and your Mac computer. If your SD card is BitLocker protected, then it can't be recognized on Mac. Because BitLocker is developed by Microsoft and macOS doesn't support it. To make sure of this issue, you can connect the card to a PC. If Windows can recognizes it and ask for password, it is BitLocker encrypted. Under this circumstance, you should decrypt the card on your PC and then reinsert it in your Mac computer.

Check if the SD card is BitLocker encrypted

Fix 4: Run First Aid to repair the unreadable SD card

If these methods above fails to fix the unreadable SD card, the card may have some file system errors. Luckily, you can easily check disk error and repair the corrupted file system with built-in First Aid.

  1. Step 1: Go to Applications > Utilities > Disk Utility.
  2. Step 2: After launching Disk Utility, choose "View" from the upper right menu bar. From the drop-down menu, select "Show All Devices".
  3. Repair unreadable Micro SD card with First Aid
  4. Step 3: Choose the unreadable SD card you wish to run First Aid on and click on "First Aid".
  5. Step 4: Click "Run". This will start the verification and repair process.
  6. Repair unreadable Micro SD card with First Aid

When Disk Utility has run it’s checks you will see a drop-down window. If Disk Utility reports that the disk appears to be OK or has been repaired, you’re done. You can click "Show details" to view more information. If Disk Utility your disk, you will be asked to back up as much of your data as possible and then reformat the disk.

Fix 5: Format the SD card on Mac

If Disk Utility fails to repair your SD card, the card has been corrupted seriously. The final fix is to reformat the SD card on Mac. But this operation will erase all your data stored on the card, please make sure you have recovered lost data with iBoysoft Data Recovery.

  1. Step 1: Launch Disk Utility from Utilities. (in Applications > Utilities)
  2. Step 2: Choose View > Show All Devices.
  3. Reformat unreadable Micro SD card with Disk Utility
  4. Step 3: Click the icon of unreadable Micro SD card on the left part of the window.
  5. Step 4: Click "Erase" on the top of the Disk Utility window.
  6. Reformat unreadable Micro SD card with Disk Utility
  7. Step 5: Complete related information (name, format, scheme), then click the "Erase" button.

Fix 6: Send the SD card to a local repair shop

If the SD card can't be formatted, it means the card has been physically damaged. Unfortunately, there is no software can help you fix any hardware problem. You can only send it to a local repair shop or replace it with a new one.

What is an SD card and how to use it?

An SD card or a Security Digital card is a type of removable flash memory cards used for storing documents, media and other files. It is designed to provide high-capacity storage in a small size and can be added in many small devices such as mobile phones, digital cameras, audio players, digital video camcorders, etc. Now SD card is available for different types ranging from memory cards, Micro SD cards to Mini SDs. But the most common use of these types is the Micro SD card.

What is a Micro SD card? As a smaller variant of the SD card, it is used in certain cell phones and other mobile devices. Though a Micro SD card is about the size of your fingernail, don't fool by its appearance, these little thing can help you store up to Gigabytes.

When our Micro SD card becomes unreadable, we must be very eager to know how to fix unreadable Micro SD card as well as get lost files back. This passage will introduce how to fix/recover unreadable Micro SD card on Mac and recover data from unreadable Micro SD card on Mac.

Why the Micro SD card is unreadable?

There are various reasons that can cause SD not readable error on Mac. The following are some common factors:

  • Corruption of the partition table.
  • Virus and Malware infection affecting the Micro SD card.
  • Improper removal of the SD card from the device.
  • Physical damage to the SD card.

Juno

Juno is a technical expert @iBoysoft. She has over 5-year experience in data recovery/repair technology. She loves to write data recovery tips and tutorials.

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