Quick Fix - 3DS Could Not Detect an SD Card

Abby Haines updated on Dec 04, 2018 to Partition Manager | How-to Articles

3DS won't read it's SD card? In this page, we focus on how to fix the issue in some easy and efficient ways. 

As a game user, you might have encountered a situation that you are unable to start a game because your SD card cannot be detected or read by 3DS. Just like the following case:

"When I open my 3DS XL, it gives me a message says "Could not detect an SD Card. The software on the SD Card could not be displayed." Is there any fix?"

Fixes for 3DS Could Not Detect an SD Card 

Follow the steps below to solve the issue correctly. 

1. Check if the Problem Is with Your SD Card or Your 3DS

Whenever you get could not detect an SD card error message, please first try another SD card in your 3DS. 

  • If another SD Card does not work, it might suggest that your 3DS should be sent in for repair. 
  • If another SD Card works, it turns out to be a problem with your SD card. You can try to reformat 3DS SD card to FAT32 with EaseUS free partition software for repair. It is said to be helpful with a large number of users. 
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 Windows 10 is supported

2. Transfer 3DS Saved Data onto Another SD Card

Here, before formatting, you can try EaseUS PC transfer software to transfer your 3DS Saved Data onto another SD card. It works if your card can be detected by your PC.

3. Reformat 3DS SD Card to FAT32


Step 1: Launch EaseUS Partition Master, right-click the partition on your external hard drive/USB/SD card which you want to format and choose the "Format" option.

Format Hard Drive Partition - Step 1

Step 2: Assign a new partition label, file system (NTFS/FAT32/EXT2/EXT3), and cluster size to the selected partition, then click "OK".

Format Hard Drive Partition - Step 2

Step 3: In the Warning window, click "OK" to continue.

Format Hard Drive Partition - Step 3

Step 4: Click the "Execute Operation" button in the top-left corner to review the changes, then click "Apply" to start formatting your external hard drive/USB/SD card.

Format Hard Drive Partition - Step 4

4. Replace Old 3DS SD Card with a New One

For some users who are still suffering could not detect an SD card error in 3DS after reformatting the card, replacing the old card with a new one is recommended.

How to Avoid 3DS Could Not Detect an SD Card 

  • Never remove or insert SD cards while the system is on.
  • Never remove a miniSD or microSD card while the adapter is still in the system.

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Frequently Asked Questions

Why Choose EaseUS Partition Master?

"I've used Partition Master Professional many times to create, delete, format, move, rename, and resize partitions."PCWorld

"Partitioning tools have come a very long since the days of complicated command line utilities and EASEUS Partition Master is one of the most advanced programs available."TECH ADVISOR

"I love that the changes you make with EaseUS Partition Master Free aren't immediately applied to the disks. It makes it way easier to play out what will happen after you've made all the changes."Lifewire

Will the "Migrate OS" feature transfer the Windows system files only or the whole C drive?

To ensure that the migrated system will boot normally, the Migrate OS feature will transfer all the files in the system and the boot partitions. Generally, the boot partition is the C drive so the transfer will include all the files in C.

Does EaseUS Partition Master license apply to multiple computers?

The license of Partition Master Professional and Server editions can be used on 1 computer only, while that for for the Technician and Unlimited editions can be used on multiple machines.

What is the difference between EaseUS Partition Master Trial version and the Free version?

Free is for home users only, with most basic functions available such as partition resize and clone. While trial can help you understand how this product works and test what a full license can do on a business or server OS machine.

Will it cause any data loss after resizing the partition in EaseUS Partition Master?

Generally, it will not cause any data loss or boot issue by resizing a partition. However, in order to protect your data, we suggest that you backup the partition before resizing, in case of any unexpected situations such as power outages, computer hardware failures, etc. You can use EaseUS Todo Backup to backup the partition and its trial version is fully functioned for 30 days.

What should I prepare before resizing the partition?

On the partition that is going to be operated, there might be some files being occupied by other programs. To ensure a successful operation, we suggest that you close all the unnecessary software before resizing that partition. Otherwise, EaseUS Partition Master will detect the partition being locked by the other software and require a reboot to resize the partition under boot mode.

About EaseUS Partition Master

All-round disk & partition management software for personal and commercial use. Let it manage your storage drive: resize, format, delete, clone, convert, etc.