Xiaomi’s current smartphones offer huge amounts of internal storage, but even 256 or 512 gigabytes could run out sooner or later, especially if you’re actively shooting high-resolution video or installing heavy games with cache files. In this situation, there is an urgent need to vacate the internal storage, transferring the personal archives to an external medium. USB-The storage device via the charging port is the fastest and most efficient way to unload the device without losing access to important data.
Many users mistakenly believe that external drives require complex manipulations or root rights, but in fact, the MIUI or HyperOS operating system has built-in tools for managing external memory, the main thing is to properly prepare the hardware and understand the logic of the Android file system. In this article, we will discuss in detail how to connect a flash drive, format it and safely move data sets.
It is important to understand that the speed of information transfer directly depends on the quality of the cable and version. USB-If you have an old phone model or a cheap adapter, it can take a lot of time to copy large files, but the result is worth it: you get a mobile archive that you can connect to your computer or TV at any time.
Equipment preparation and OTG support verification
The first step is to test your smartphone’s technical ability to work with external drives. OTG (On-The-Go) technology allows your mobile device to act as a host, powering plug-ins. Virtually all current Redmi, POCO and Xiaomi flagship models support this feature out of the box, but there may be exceptions in budget segments of past years.
You'll need the drive to connect, and the right adapter, if you have a flash drive with a regular one. USB-Type-A connector, you will need a cable adapter or hub. USB Type-C is luckier – many modern flash drives already have a double-sided connector that eliminates the need for extra wires. Make sure the adapter supports data transfer, not just charging, as visually they can be identical.
⚠️ Attention: Use of substandard adapters can lead to voltage surges that can damage the smartphone's power controller.
You can test support experimentally or through specialized Google Play apps like "USB OTG Checker." If the system reports support but the flash drive is not detected, try restarting the phone with the drive already connected. Sometimes the driver needs to be re-initialized to start the service correctly.
Formatting a drive to work with Android
Once physically connected, the system may not see files if the flash drive file system is incompatible with Android.Native and the most recommended system for mobile devices is FAT32 or exFAT. The NTFS format standard for Windows often requires the installation of additional drivers or paid applications to write data, although reading may work by default.
You can format it right in the interface of your smartphone, and when you plug it in, you'll see an icon in the notification curtain. Click on it or go to Settings. → The phone. → The storage system will suggest formatting. USB-This process will completely delete all data, so copy important files to your computer beforehand.
The choice between FAT32 and exFAT depends on your needs. FAT32 has a 4 gigabyte limit on a single file, which is critical for 4K movies or game images. exFAT is devoid of this limitation and better suited to modern memory volumes, providing more stable work with large data sets.
Path to format: Settings → Advanced settings → Memory → USB- drive → FormatIf you can't format with standard tools, use your computer. Put the flash drive in your PC, right-click on the drive in My Computer and select Format. In the File System field, select exFAT and press Start. Then plug the drive back into your phone.
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If the flash drive is more than 32 GB, the system may not offer the FAT32 format. In this case, forced formatting in FAT32 is only possible through third-party utilities on the PC, but exFAT will be more reliable.
Use of built-in conductor for transfer
In the shell. MIUI HyperOS preinstalled a powerful file manager that allows you to easily manipulate data between internal storage and USB-To get started, open the Explorer (or File Manager) app. At the top of the screen, you'll see tabs or icons that switch view between internal memory and connected memory. USB-device.
The transfer process is intuitive. Go to internal memory, find a folder to clean (for example, DCIM/Camera for photos or Download for downloads). Select the files you want with a long press. In the bottom menu that appears, select the option to copy or Move, the difference is that Move will delete the originals after copying, freeing up space immediately.
- 📁 For photos and videos, select a folder. DCIM Pictures to preserve the structure of albums.
- 📂 It is better to transfer documents to a separate folder on a flash drive, calling it “Docs”, so as not to get confused.
- 🎵 Music files are conveniently sorted by artists into the folder "Music" on an external medium.
Once you select the "Insert" or "Move Here" action, the system will redirect you to the root. USB-Select the target directory and confirm the operation. When moving large amounts of data (tens of gigabytes), the progress bar can freeze for a few seconds — that's okay, don't interrupt the process.
☑️ Algorithm of file transfer
Default storage setting and working with media
One of the main problems users have is that the camera continues to store new pictures in internal memory, even when the flash drive is connected. MIUI The ability to transfer the camera recording to the full USB-The drive is often hidden or missing for the sake of stability, but for other applications, this setting can be changed.
To save new downloads from your browser or messengers to a flash drive, go to the settings of a particular application. For example, in Telegram, the path will be Settings → Data and memory → Save Way. In Chrome or MI Browser, a similar option is in the downloads section, which will automatically direct heavy files to an external medium.
| Type of data | Can I reschedule it? | Recommended method | nuance |
|---|---|---|---|
| Photos and videos | Yeah (archive) | Conductor/Gallery | New photos can be written inside |
| Music. | Yes. | Conductor | Media library scan required |
| Annexes | Partially. | System settings | Depends on the software developer. |
| Documents | Yes. | Conductor | No restrictions. |
For multimedia files, it is important to check their display in the gallery or player after transfer, if the files are not visible, the system may need time to index, in which case it will help to reboot the smartphone or clean the cache of the Media Storage application through the developer menu.
Application portability and memory expansion
The issue of installing apps (APKs) directly on a flash drive or porting them remains one of the most difficult in the Android ecosystem. Since Android 6.0, Google has introduced Adoptable Storage, which allows you to format a flash drive as part of internal memory. However, manufacturers including Xiaomi often hide this feature in the standard menu, as the speed of applications from a regular flash drive can be slow.
If your firmware version allows, when formatting USB-The system can offer two options for a storage device: Portable Storage or Internal Storage, and the second option will turn the drive into a system partition, the data will be encrypted, and the flash drive will not work on other devices without re-formatting. This is the only way to make the system think that the flash drive is an internal memory, allowing you to install games and programs there.
⚠️ Attention: Random recording speed (IOPS) most USB-The flash drive is much lower than the built-in flash memory of the smartphone. Installing heavy applications on the flash drive can lead to interface lags and long loading of programs.
In cases where the standard function is not available, users resort to activation through ADB-This requires connecting the phone to the computer and entering special codes into the console, but this method does not guarantee stable operation and can lead to errors in the system when the drive is turned off.
How to activate internal memory through ADB
Safe extraction and problem solving
A critical step in working with external drives is to properly end the session. Android, like a computer, caches write operations. If you just pull the flash drive during copying or even immediately after it, the file can become corrupted and the file system can go into read-only mode.
To safely extract, lower the notification curtain. There will be a notification about the connected USB-Press the Safe Removal or Eject button, only after the message "Can be retrieved" appears. USB-physical disconnection of the device, which will preserve the integrity of your data.
- 🔌 The flash drive is not defined: try another adapter or cable.
- ⚡ Insufficient power: if the flash drive requires a lot of energy (for example, SSD The disk, the phone may not pull it. USB-powerhouse.
- 📁 Files are not copied: check the file system format, possibly a file larger than 4GB, and the format FAT32.
If the flash drive is detected but the files are not readable, try connecting it to your computer to check for errors. Sometimes it helps to re-format with a different cluster size, and it is also worth checking whether the flash drive is not protected from writing (physical switch on the case of some models).
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Secure extraction through the notification menu is a mandatory procedure to prevent data loss and damage to the drive file table.