SD Card Shows Read Only? See How to Fix It (5 Solutions)

Q:  How to fix my micro SD card that became a read-only memory card?

Your sd card isn't working correctly and has been set to read only on Android, what's this error message?  Since the Android external memory card has turned to read only all of a sudden, I can no longer add, write, or delete things from it. How to fix the SD card that mounted as read only?

SD card read only, also known as SD card write-protected, refers to a memory card or micro SD card that you can read, however, cannot modify data on it.

SD Card Read Only Symptoms

Usually, a memory SD card or USB flash drive itself has been locked into "read only" mode; it's because the card is getting old, damaged, corrupted, or infected by a virus. Sometimes, human error will also make SD card read only.

When your Android or camera external SD card mounted as read only, it will prevent you from writing, deleting, copying or moving data on it. Here we'll teach you how to fix a read-only SD card to read-write by [1] checking the write protection tab, or using the [2] Windows command, [3] automatic write protection removal software & [4] a third-party FAT32 to NTFS converter. As long as you successfully remove read only from the SD card, you can go on formatting the SD card freely as you want.

Method 1. Unlock Read-Only SD Card with Physical Write Protection Tab

Most memory cards for Android or Nintendo Switch use are usually with a physical write protection tab. If you find such a tab on your card, then first you need to slide it to the unlocked position to remove the read only attribute.

Step 1: Take out the memory card that is currently in a read only state from your device. 

Step 2: Check if there is a physical lock switch on it. 

Step 3: Position the lock switch from ON to OFF and unlock the SD card.

Method 2. Remove Read Only from SD Card Using CMD

Related post: how to fix external hard drive or SD card read-only on Mac

Step 1: Plug the read only micro SD card into Windows.

Step 2: Click "Start" > "Run" and enter cmd.

Step 3:Enter diskpart.

Step 4: Type list volume. Now you'll see all your connected drives, see which one is the memory card drive.

Step 5: Type select volume #. # represents the letter of your memory card drive.

Step 6: Type attributes disk clear readonly > removing the write protection.

Copy all the commands here:

diskpart
list volume
select volume #
attributes disk clear readonly

Method 3. Fix Read Only SD Card Using Write Protection Removal Software

If you are not professional in computing management and not familiar with command lines, don't worry. EaseUS R&D team has promoted a fresh kit for helping you resolve the write-protection issue on your hard drive, external hard drive, USB or SD card, etc., devices.

EaseUS Tools M is a practical computer fixing tool that is safe and light-weighted. It's a perfect alternative to the command line. 

Use this one-click tool to solve the write-protection issues on your own:

Step 1:  DOWNLOAD and install EaseUS Tools M for free.

Step 2: Run EaseUS Tools M on your PC, choose the "Write Protection" mode.

Step 3: Select the device which is now "Write-Protected" and click "Disable" to remove the protection.

Now open your SD. You should be able to edit, delete, copy or move files without a hitch.

Method 4. Change Read Only SD Card Using FAT32 to NTFS Converter

SD cards are usually formatted with FAT32. One solution to fix SD card read only issue is to convert the FAT32 file system to NTFS. Diskpart command can help you with the conversion, however, with a complete data loss. An easier and safer way to convert to NTFS without data loss is with the help of EaseUS free partition manager.

Step 1. Install and launch EaseUS Partition Master on your computer.

Step 2. Select a FAT32 partition, right-click on it and select "Convert to NTFS". If you need to convert a storage device such as SD card or USB flash drive to NTFS, insert it into your PC first and repeat the previous operation.

Step 3. Click "OK" on the pop-up dialog box to continue.

Step 4. Now the converting process will start automatically. Wait until the operation process is finished.

How to Format Read Only SD Card to Normal

Many people tend to format a memory card when mounted as read-only on their Android phones. However, you all end up with failure because of the error that Windows was unable to complete the format, just like how Windows Disk Management fails to format a write-protected SD card. Only when you removed the read-only attribution on the SD card, you can then format it and restore SD card full capacity.

It's easy to format a read-only SD card by using EaseUS partition manager software again. Just plug in your SD card with the read-only problem that you have fixed and follow the simple steps to get a full fix.

Step 1. 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.

By formatting an SD card that was mounted as read-only can help restore its full capacity and make it work as a new storage card.