How to format a flash drive on a Xiaomi Redmi phone: a step-by-step algorithm

Modern smartphones Xiaomi Redmi have a huge internal memory, but for the media library from the 4K-Video or archive of working documents may not be enough. USB-flash-drive OTG-cable is the easiest and cheapest way to expand storage, but before you can transfer files, the Android operating system will require a formatting procedure for the drive.

Often flash drives come with an NTFS or exFAT file system that can work incorrectly with mobile devices without special drivers. The standard procedure for putting the drive in order allows you to create a universal data structure, which ensures stable operation and the ability to write files of any type.

In this guide, we will detail how to prepare an external drive for your Xiaomi. You will learn about the differences in file systems, understand why the phone may not see the memory card, and learn how to safely clean data. Remember that the formatting process will completely destroy all files on the USB drive, so copy important data to the computer in advance.

Preparation of equipment and compatibility check

Before you start manipulating, you need to make sure that your device is physically able to communicate with external drives. Virtually all modern models of the Redmi Note and Xiaomi Mi support OTG (On-The-Go) technology, which allows the charging port to operate in host mode, feeding power to the connected gadgets.

You'll need the drive and the adapter, if you have a flash drive with a standard connector. USB-A, necessary OTG-Type-C cable or adapter (or Micro-USB for older models) SD, built-in flash drive case, procedure similar but may require less power.

⚠️ Warning: If your phone doesn't respond to a flash drive connection, try using another cable.Cheap adapters often don't have the necessary contacts to transmit data, performing only the charging function.

Older smartphone models may not work properly with flash drives larger than 64 or 128 GB due to the limitations of the memory controller, in which case the system may suggest formatting the device, but the process will take much longer.

• 🔌 Make sure the charging port connector is clean and has no oxidation.
• 📱 Check the battery charge of the phone – the formatting process is energy intensive, it is desirable to have more than 50% charge.
• 💾 Close all heavy applications before connecting an external drive.
• 🛡️ Backup your data from the flash drive to your computer if it has important information on it.

After the physical connection in the notification curtain, a connection message should appear USB-If this does not happen, go to the settings and search for"OTG". On some firmware MIUI HyperOS requires manual activation of this switch, although in most cases it is on by default.

File system selection: FAT32, exFAT or NTFS

One of the most important steps is choosing the file system type. It depends on where you can open files in the future. Android natively supports multiple formats, but each has its limitations. FAT32 is the most compatible standard, working on any device, from old radios to modern TVs.

However, FAT32 has a critical disadvantage: it does not support recording files larger than 4 GB. If you plan to store high-resolution movies or disc images on a flash drive, this format will not suit you.

The exFAT file system is free of the 4GB limit and works great with large amounts of memory. Most modern Xiaomi smartphones have no problem reading and writing in this format. NTFS format, native to Windows, on Android is often read-only without installing additional driver applications.

💡

If you plan to use the flash drive only to transfer photos and documents between your phone and your computer, choose FAT32 for maximum compatibility.

When formatted through a standard phone menu, the system often offers the best option. However, if you format the drive through a computer, the choice is yours. Below is a comparison table to help you decide on your choice.

Choosing the wrong file system can lead to copying errors, such as trying to burn a 5GB movie onto a FAT32 formatted flash drive will fail, even if the space is 100GB. The system will give a message about a lack of space, which often confuses users.

Formatting through the standard Android menu

The easiest and safest way to get your flash drive in order is to use the built-in MIUI tools, which ensure that the partition structure is created correctly for your device, which takes only a few minutes and does not require third-party software installation.

Once you connect the flash drive to your smartphone, the system usually detects the new device itself, the notification curtain will show the corresponding icon, click on the notification or go to the settings menu. The path may vary slightly depending on the version of the shell, but the logic remains the same.

1. Open the settings menu of your Xiaomi Redmi.
2. Find the About Phone section or Advanced Settings.
3. Select the item Storage (or Memory).
4. In the list of connected devices, find your USB-flash-drive.
5. Click on the menu icon (three dots) or the Settings button next to the drive name.
6. Select the Format option.

The system will give a warning that all data will be deleted. Confirm the action. In the process, do not remove the drive or lock the screen so as not to interrupt the recording of service spreadsheets. Once completed, a message will appear about the successful formatting.

Sometimes the phone offers two uses: as a portable storage device or as part of internal memory. For flash drives, it's better to choose the first option. Turning the flash drive into internal memory (Adoptable Storage) encrypts it, and on other devices it will not read.

Using the Mi Explorer application to manage files

The embedded file manager, Mi Explorer, is a powerful tool that is often ignored, that allows you not only to view files, but also to manage connected drives, which is handy if the standard settings menu for some reason does not display the format button.

Run Explorer on the home screen or in the Tools folder. At the top of the interface, you'll see a switch between the internal memory and the internal memory. USB-If the flash drive is connected but not formatted, the system may suggest that you do so immediately when you try to log in.

⚠️ Warning: Do not use third-party formatting apps from Play Market if standard tools are working properly. Third-party software can create custom markup that the phone will stop seeing after a restart.

It's also convenient to check the result through the Explorer. After formatting, try creating a new folder or renaming an existing file. This will confirm that the recording is open. If the file is created and opened, the procedure was successful.

In some versions of HyperOS, the conductor is expanded to provide detailed information about the occupied space, the temperature of the drive (if supported by the controller), and the read/write speed in real time, which helps diagnose slow flash drives.

Computer Formatting: When the Phone Is Powerless

There are situations where a smartphone sees a flash drive but refuses to format it, giving it an error, or you have to force a file system to be changed to a specific one, in which case a PC or a laptop comes to the rescue, which is a more radical method that requires caution.

Connect the flash drive to your computer. Open "My computer" (This computer). Find your removable drive in the list of devices. Right-click on it and select Format. The settings window will open.

In the File System box, select the option you want (exFAT or FAT32 is recommended). Leave the cluster size by default. Be sure to uncheck Quick Formatting if you want to do a deep sector error check, although it will take longer.

diskpart


list disk




select disk X (where X is your flash drive number)




clean




create partition primary




format fs=exfat quick




assign




exit

The code above is a command for the console utility diskpart in Windows, use it only if the GUI is not working. Be very careful: an error in selecting a disk number will result in loss of data on the computer's hard drive.

Once the procedure is completed on the PC, safely remove the device and connect to the phone again. Xiaomi should recognize the new file structure. If the phone offers to format the flash drive again, then the selected file system does not suit it, and you need to repeat the procedure by choosing another type (for example, FAT32 instead of NTFS).

Solving common mistakes and problems

Even if you follow all the instructions, you can have technical difficulties"USB-It doesn't always mean a physical breakdown. Often, just reconnecting the cable or rebooting the smartphone is enough.

If the flash drive is detected but the files are not copied, check the permissions. In rare cases, Android requires you to allow the application to access the file. USB-The problem may also be power consumption: if the flash drive is powerful and the cable is long and thin, the current may not be enough to work smoothly.

• 🔄 Reboot your phone with a connected flash drive.
• 🔌 Try another one. OTG-adapter.
• 💡 Check the flash drive for viruses through antivirus on PC.
• 📉 If the flash drive is very fast (USB 3.1) and the port of the phone is old (USB 2.0, possible speed conflicts.

If the phone freezes when you connect the drive, probably the file table is damaged critically, only full low-level formatting through special utilities on the computer, for example, SD Memory Card Formatter (works with ordinary flash drives).

💡

90% of Xiaomi formatting problems are solved by replacement OTG-cable or file system selection FAT32 versus exFAT.

Frequently Asked Questions (FAQ)