How to format micro sd card to exfat？

​Formatting a micro SD card is a common task that can help improve performance, free up space, or change the file system for compatibility with various devices. The exFAT (Extended File Allocation Table) file system is ideal for SD cards larger than 32GB, especially for use with modern devices like smartphones, cameras, and tablets. 

1. exFAT

Advantages of exFAT

exFAT is a file system developed by Microsoft, primarily designed for flash drives, including micro SD cards. Here are some advantages:

Supports Large Files: exFAT can handle files larger than 4GB, making it suitable for HD videos and large applications.

Cross-Platform Compatibility: Works seamlessly with both Windows and macOS, making file transfers between different operating systems easier.

Efficient Storage: Optimized for flash memory, exFAT reduces the wear on the storage device and improves performance.

When to Use exFAT

When you plan to use the micro SD card with devices that require large file transfers.

If your SD card is larger than 32GB, as FAT32 has limitations on file size and partition size.

When you need compatibility across various operating systems.

2. Preparing to Format

Before you start the formatting process, it’s essential to prepare adequately to avoid data loss and ensure compatibility.

Backup Your Data

Transfer Files: Ensure all important files on your micro SD card are backed up. You can copy them to your computer or another storage device.

Check Hidden Files: Ensure that hidden files are visible so that you don’t miss anything crucial.

Check Your Device Compatibility

Verify that the devices you intend to use the micro SD card with support exFAT. Most modern devices do, but it’s always good to confirm.

3. How to Format a Micro SD Card to exFAT

Here’s a detailed guide on how to format your micro SD card using different operating systems.

On Windows

Insert the Micro SD Card:

Use a card reader or insert it directly into your laptop or computer.

Open File Explorer:

Press Windows + E to open File Explorer.

Locate your micro SD card in the list of drives.

Format the Card:

Right-click on the micro SD card and select Format from the context menu.

In the Format window, select exFAT from the File system dropdown menu.

Optionally, you can name the card in the Volume label field.

Ensure Quick Format is checked to speed up the process.

Click on Start to begin formatting.

Confirm Formatting:

A warning will appear informing you that all data will be erased. Confirm to proceed.

Completion:

Once the formatting is complete, a message will appear. Click OK and close the window.

On macOS

Insert the Micro SD Card:

Use an SD card slot or an external card reader.

Open Disk Utility:

Go to Applications > Utilities > Disk Utility.

Select the Micro SD Card:

In Disk Utility, locate your micro SD card in the sidebar.

Format the Card:

Click on the Erase button at the top.

In the Format dropdown, select exFAT.

Optionally, you can provide a name for the card in the Name field.

Click Erase to begin formatting.

Completion:

Once done, the card will be formatted to exFAT. Click Done to finish.

Using a Third-Party Tool

If you prefer using third-party software, tools like MiniTool Partition Wizard, AOMEI Partition Assistant, or SD Card Formatter can also format your micro SD card.

Download and Install the Software:

Choose a reputable tool and install it on your computer.

Launch the Application:

Open the formatting software and locate your micro SD card.

Format the Card:

Select the micro SD card, choose the exFAT file system, and follow the software prompts to complete the formatting process.

4. Verifying the Format

After formatting your micro SD card, it’s important to verify that the process was successful.

Check File System Type

On Windows:

Right-click the micro SD card in File Explorer and select Properties. Look for the File system type to confirm it says exFAT.

On macOS:

Open Disk Utility and select the micro SD card. The file system will be displayed in the information panel.

Testing the Card

To ensure everything works correctly, try transferring a large file (over 4GB) to the micro SD card. If it transfers successfully, the exFAT format is functioning as intended.

Formatting your micro SD card to exFAT can enhance compatibility and performance, especially for larger files and modern devices. By following this guide, you should be able to format your card successfully while avoiding data loss. Remember to back up your data, verify the format after completion, and be prepared to troubleshoot any issues that may arise.