How to format the flash drive on the smartphone Xiaomi Redmi: all ways

Why formatting a flash drive on Xiaomi Redmi can cause problems

Xiaomi Redmi smartphone owners often face the need to format a microSD card directly on the device, ranging from reading errors to wanting to change the file system before using it as internal memory. However, standard MIUI tools do not always cope with the task - especially if the flash drive has been used on other devices or has an incompatible file system.

The main challenge lies in the limitations of Android: the system by default offers only FAT32, which does not support files larger than 4 GB. Meanwhile, modern games, 4K videos or backups often exceed this limit. And alternative options like exFAT or NTFS simply do not appear in the formatting menu. In this article, we will analyze all the working methods, from built-in functions to bypassing restrictions through ADB.

It is important to understand that improper formatting can lead to data loss or even a USB drive failure. For example, if you interrupt the process during the file system change, the card memory controller can get damaged.

Preparation of the flash drive for formatting on Xiaomi Redmi

Before you start formatting, follow a few mandatory steps to avoid errors and save data:

• 📱 Remove the flash drive from your smartphone and check it on another device (PC, laptop). Make sure the card is identified and readable/writeable.
• 🔍 Check the file system: connect the flash drive to the computer, right-click on the disk in "This computer» → «Properties." If it's listed RAW, map damaged.
• 📊 Estimate the amount of data: if the flash drive has files larger than 4 GB, after formatting in the FAT32 You can't copy them back.
• 🔋 Charge your smartphone to at least 50%. The formatting process can take up to 10-15 minutes, and interruption due to battery discharge is fraught with failures.

If the flash drive is defined as RAW or gives out errors when connecting, first try to restore it via your PC using the SD Card Formatter utility (the official tool from the SD Association).

⚠️ Note: Do not use flash drives in the class below UHS-I (U1) It's going to slow down the system and cause frequent recording errors.

Method 1: Standard formatting through Xiaomi settings

The easiest method is to use the built-in MIUI tools, which are suitable for most tasks, but have limitations:

1. Insert the flash drive in the smartphone and wait for its definition.
2. Open the Files app (the folder icon on the desktop).
3. Go to the Device section → Find your flash drive (usually displayed as SD-card).
4. Click on the three dots in the top right corner → select Settings → Format.
5. Confirm action. The system will offer FAT32, and there will be no other options.

It takes 1 to 5 minutes depending on the size of the card, and when the flash drive is finished, it will be ready to use, but remember: this method does not allow you to choose exFAT or NTFS, nor does it correct the physical errors of the medium.

Method 2: Formatting as an internal memory (Adoptable Storage)

If you want to use a flash drive as an extension of internal memory, it needs to be formatted in a special way, called Adoptable Storage, and it's available on all Xiaomi Redmis with Android 6.0 and later.

• 📱 The flash drive will be encrypted and tied to a particular device, and on another smartphone or PC, the data will not be available.
• 🔄 Once formatted, the map cannot be retrieved without losing data, and the system will use it as part of the main storage.
• ⚡ Speed depends on the class of the flash drive. for the Redmi Note 10/11 newer recommended UHS-I (U3) higher.

Instructions for setting:

1. Put the flash drive in the smartphone.
2. Go to Settings. → Memory.
3. Click on your name. SD-map → three-point → Settings → Internal memory.
4. Follow the instructions on the screen, and the system will tell you that all data will be erased.
5. After formatting, restart the device.

Now the flash drive will be displayed as part of the internal memory, and to return it to its original state, you will have to format it again through Settings. → Memory. → SD-map → Formatting as a portable storage device.

⚠️ Note: Some Redmi models (e.g. Redmi) 9A or Redmi 8) Adoptable Storage can be disabled by the manufacturer, in which case the item "Internal memory" in the menu is missing.

Method 3: Formatting via PC with file system selection

If Xiaomi's built-in tools don't work, you can format a flash drive on your computer and then use it on your smartphone, which gives you complete control over the file system and formatting options.

You'll need:

• 🖥️ Computer with Windows, macOS or Linux.
• 📁 Card reader (if there is no microSD slot in the PC).
• 🔧 Programme SD Card Formatter (recommended) or standard OS tools.

Step-by-step instructions for Windows:

1. Connect the flash drive to the PC through the card reader.
2. Download the SD Card Formatter utility and install it.
3. Launch the program, select your flash drive in the list of devices.
4. In the Formatting options field, select Quick format or Overwrite format (full, for damaged cards).
5. Specify the file system: FAT32 – for compatibility with all devices (but a limit of 4 GB per file); exFAT – for files >4 GB (recommended for Redmi); NTFS – only if the flash drive will be used mostly on a PC (on Android you will need root or special applications).

Format

Once formatted, safely remove the flash drive and paste it back into Redmi, and the system must automatically identify it and suggest using it as a portable or internal drive.

💡

If the flash drive is not detected on Xiaomi Redmi after formatting on your PC, try restarting your smartphone or clearing the Storage app cache in the settings. Sometimes reconnecting the card helps.

Method 4: Formatting through ADB (for power users)

For those who are willing to work with the command line, there is a way to format the flash drive in exFAT or NTFS directly on the smartphone through ADB (Android Debug Bridge. This method requires the developer mode to be enabled and USB-debugging.

Warning: Incorrect ADB commands can cause data loss on your smartphone, and use this method only if you are confident in your actions.

Instructions:

1. Activate Developer Mode on Redmi: Go to Settings → About Phone. Press 7 times on MIUI Version. Return to Settings → Additional → Developer. Enable USB Debugging.

Connect your smartphone to your PC through USB-cable (use the original cable for a stable connection).

ADB Tools

Open the command prompt (Windows) or terminal (macOS/Linux) in the folder with ADB.

adb devices

(The name of your device should appear)

adb shell

sm list-disks

(Remember the USB flash drive ID, such as disk:179.64)

sm partition disk:179,64 private

(Replace 179.64 with your ID)

This command will format the flash drive into exFAT and prepare it for use as internal memory. To return the card to its original state, use:

sm partition disk:179,64 public

⚠️ Attention: Teams ADB Register and syntax sensitive. An error in the disk ID (disk:X,Y) can lead to formatting of the smartphone's internal memory. Always double check the input data.

Frequent mistakes and their solutions

Even when following the instructions, Xiaomi Redmi users sometimes run into problems, and consider typical scenarios and ways to fix them:

• 🚫 "Memory card corrupted" Error Cause: Physical damage or file system failure Solution: Connect the flash drive to your PC and complete formatting through SD Card Formatter (not fast!) If it doesn't work, the card is faulty.
• ❌ «Formatting incomplete" Reason: Power shortage or process interruption. Solution: Charge your smartphone to 100%, try again. If the error repeats, try another one. USB-port.
• ⚠️ The flash drive is not determined after formatting Reason: Incompatible file system (e.g., file system, NTFS Solution: Format the card to exFAT on your PC and reconnect to Redmi.
• 🔄 Cyclical reboot after formatting as internal memory Cause: Flash drive incompatibility with firmware MIUI. Solution: Remove the card, reset your smartphone settings to factory, then repeat the procedure with another flash drive (SanDisk Ultra or Samsung recommended) EVO).

If neither method worked, check the flash drive on another device, it may have failed, and you can use H2testw (Windows) to test the card for broken sectors.

💡

Before buying a new flash drive for Xiaomi Redmi, pay attention to the speed class. To record 4K video or use as internal memory, you need a minimum of UHS-I (U3) or A2 (for example, SanDisk Extreme or Samsung PRO Endurance).

FAQ: Answers to popular questions