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Most users insert a micro SD card in their Android phones to save photos, videos, documents, etc when they have limited internal memory. But for various reasons, the card is prone to be corrupted and then cannot recognize or mount. Sometimes, it will also report error messages like 'SD card is blank or has unsupported file system', 'damaged sd card try reformatting it'.
I recall seeing a gadget that could read/format the protected area of the card where the serial/CID number and hardware encryption key was stored, but i can't remember what it was called, so therefore i can't find it. The CID register is 32 bytes long and contains a unique card identification number. It is programmed during card manufacturing and cannot be changed by SD Card hosts. The CID number is a compilation of information about the card, such as manufacturer, date manufactured, checksum total, GB size and more.
How to repair corrupted or damaged SD card on Android
When the corrupted SD card error occurs unexpectedly and prevents you from reading or writing to the device. How do you repair android SD card to make it work properly? Here, several step-by-step tutorials are created to show you how to fix Android SD card with or without SD card repair tool. So, if you have no answer, please read on to get a solution.
Method 1. Format damaged Android SD card for repair
When it comes to Android SD card repair, we think of formatting first. Compared with other methods, it's much easier and more efficient. To do it: pull out the SD card from your Android device and connect it to PC. In Computer or My Computer, located and right click on the SD card and select Format.
If Windows doesn't allow you to complete the format process, you can download EaseUS free partition software, a third-party SD card format tool for help.
Step 1: Open EaseUS Partition Master. Find your SD card and right-click the partition you want to format and choose 'Format'.
Step 2: Set a new partition label, file system (NTFS/FAT32/EXT2/EXT3), and cluster size to the selected partition, then click 'OK'.
Step 3: Click 'OK' on the pop-up window to continue.
Step 4: Click the 'Execute Operation' button on the toolbar, then click 'Apply' to start formatting your SD card.
As formatting will erase all the files on the SD card. So, many users won't take it because they don't want to sacrifice their data. But don't worry! Damaged SD card data recovery is possible if you try EaseUS disk data recovery. You can try it to retrieve your data from damaged Android SD card before formatting it for repair.
Method 2. Run CHKDSK to repair Android SD card errors or corruptions
If you don't want to format the corrupted memory card for repair, you can also try the alternative solution - calling CHKDSK to repair Android SD card. Even it is not 100% work, but it worth a try. To do it:
Connect the Android card to your PC using a card reader. On the PC, click on Start -> All Programs -> Accessories -> Command Prompt. Enter the command: chkdsk [sd card drive letter]: /r. It will make the chkdsk start to scan and repair Android SD card errors or corruptions.
CHKDSK Alternative
If you don't have any technical know-how and want to minimize data risks, using third-party software could be a better choice. The Command line is suitable for computer professionals since wrong commands can cause severe problems. Therefore, we strongly recommend you to try an automatic command line alternative.
EaseUS Tool M is a practical computer fixing tool that is safe and light-weighted. It's a perfect alternative to CHKDSK command. Use this one-click tool to solve your computer issues.
To fix file system error or disk error:
Step 1: DOWNLOAD EaseUS Tool M for Free and install it.
Step 2: Open the software and select 'File Fixing' on the left pane.
On the right pane, choose the drive and check off the box at the bottom - 'Check and fix file system error'. Then, click 'Fix' to start repairing the error.
Step 3: Wait until the operation completes. Wait until the operation completes. After the operation completes, click the 'View' button to check the drive.