Modern Xiaomi smartphones that work on the shell MIUI or HyperOS, often faced with a lack of internal memory when working with heavy media. USB-flash-drive OTG However, before the first use or after prolonged use, the device may require a complete cleanup to correctly display files or eliminate file system errors.
The cleaning process can be required in many situations, from the simple freeing up of space to the need to change the file system to be compatible with the multimedia systems of the car or the TV. It is important to understand that standard methods of deleting files are not always effective if the drive has logical damage. In this article, we will discuss all the ways to safely and completely clean the USB drive on Xiaomi devices using only the built-in system tools.
Preparation for formatting and compatibility check
Before embarking on drastic cleanup actions, make sure your smartphone is technically ready to work with external drives. Not all budget models support the OTG (On-The-Go) feature, which allows power and data to be transferred via a USB Type-C or Micro-USB connector. Compatibility check is the first step that will save you from false conclusions about a USB flash drive malfunction.
It's also critical to assess the state of the drive itself, and if you have important data on the drive, you have to copy it to your computer or to the cloud, because the formatting process will destroy all the information without the ability to recover it with standard means, and Android will warn you about this, but it will not hurt to be safe.
⚠️ Warning: Make sure your Xiaomi smartphone battery is at least 40-50%. Abrupt power outage during the formatting procedure can damage the memory controller or the drive itself.
To connect, you may need a special adapter if you use a classic USB flash drive with a Type-A connector. Owners of modern models with a USB-C connector can use two-way drives. After physical connection, the system must emit a characteristic sound and show a notification in the status bar curtain.
💡
Use original or certified OTG adapters. Cheap Chinese counterparts often can not withstand the stress and can damage the power controller of the smartphone.
Cleaning through the standard “Conductor” menu
The easiest and most affordable way to clean a USB drive on Xiaomi is to use the built-in Explorer (or Files) app.This method does not require installing third-party software and is suitable for quick garbage cleaning or full formatting. The MIUI shell interface is intuitive, making the procedure accessible even to inexperienced users.
Once you have the flash drive, open the Explorer app, in the list of available storage facilities, along with internal memory and SD-map, should show the item USB-You can click on it and access all the files, and selectively delete the objects you need and click on the Delete button».
However, if your goal is to clean up the file system completely and get it in order, you should use the formatting function, so you can find the appropriate option in the Explorer interface or in the storage management menu, and the system will suggest you choose the file system if you need it.
☑️ Pre-formatting verification
It’s worth noting that Xiaomi’s standard Explorer sometimes hides advanced formatting options, offering only basic cleaning, and that’s when system settings come to the rescue, where access to memory management is deeper.
Using system settings to manage memory
Deep cleaning and formatting are available through the smartphone’s settings menu, which is more reliable because it interacts directly with the memory management system drivers. To get to the desired section, you need to go through Settings → About Phone → Storage (the path may vary slightly depending on the Android version).
In the storage menu, you'll see a list of all the connected drives. USB-It's a drive, you'll have access to the parts, the space, the space, the control buttons, and that's where the Clean button is, or the Format button».
When choosing formatting, the system will offer two options for using the drive: as a portable storage device or as part of internal memory. USB-The first option is most often chosen because it provides compatibility with other devices (PC, TV, car). The second option (Adoptable Storage) encrypts the drive, making it unreadable on other gadgets without re-unlocking it.
| Parameter | Portable storage | Internal memory. |
|---|---|---|
| Compatibility | High (PC, TV, other phones) | Just this smartphone. |
| File system | FAT32 / exFAT | EXT4 (encrypted) |
| Portability of applications | Limited. | Full support |
| Security of data | Standard. | High (encryption) |
⚠️ Note: When choosing the “Internal memory” mode, all data on the flash drive will be irretrievably deleted, and the flash drive itself will be formatted into the proprietary Android format.
Why can't the system see the flash drive?
Formatting to exFAT and NTFS file system
One of the common reasons why users want to clean up USB Xiaomi drive, is the need to change the file system. FAT32 It has a 4GB file size limit, making it impossible to record high-resolution movies or large archives. NTFS.
Modern Xiaomi smartphones with Android 10 and above often support the exFAT file system out of the box. This is the optimal choice for flash drives larger than 32 GB. NTFS format is supported less often and often requires root rights or special drivers, although new versions of HyperOS support is expanding.
To change the format through standard means:
- 📁 Go to the storage settings.
- 🗑️ Select the option “Clean” or “Format».
- 💾 If the system offers a choice of file system, specify exFAT.
- ✅ Confirm the action and wait for the process to be completed.
If you can't use the standard exFAT, your drive may already be formatted in NTFS and your phone can see it, but it can't record it, in which case cleaning through your phone may not be possible without losing partition structure, and you'll need a PC.
Using third-party cleaning applications
In cases where built-in MIUI tools fail or fail to format, specialized utilities come to the rescue. DriveDroid (requires Root) or USB OTG Helper can provide more detailed control over the connected hardware. However, advanced file management applications such as Total Commander or FX File Explorer are often enough to clean easily.
These apps allow you not only to delete files, but also to analyze the occupied space, finding hidden folders and the cache that takes up space. For example, instant messengers often save temporary files to an external drive if it was selected by default.
The cleaning process with third-party software looks like this:
- 📲 Install a file manager from Google Play.
- 🔍 Give the application access to USB-storage device (system permission).
- 🧹 Use the built-in Memory Analysis function or manually delete folders.
- 🛠️ Use the formatting function inside the application, if it is available.
⚠️ Note: Be careful when deleting files through third-party managers.Android system folders (e.g, Android/data) It is better not to touch, so as not to disrupt the work of applications.
It’s important to understand that third-party apps can’t get around the hardware limitations of a smartphone. If a USB controller doesn’t support NTFS, then no program will make the phone work with it fully. Critical: Before using any third-party software, make sure it has good reviews and doesn’t contain malicious code, as you give it access to all your data.
Problem Solving: Reading Errors and “Write Protection”
Often users are faced with a situation where it is not possible to clear the USB drive on Xiaomi due to file system errors or false activation of write protection. The message "File is corrupt" or "Formatting is required" can appear even if the USB drive is working, this often happens after incorrect removal of the device.
The first thing you need to do is try to fix the bugs with the system. Some file managers have a "Check Errors" feature. If the phone says the drive is damaged, try plugging it into your computer and running a drive check (chkdsk) and then inserting it back into your phone.
If the flash drive is detected but the files are not deleted or written, a physical security switch (on full-size adapters) or a logic failure may have triggered, in the latter case only low-level formatting helps, which is extremely difficult to do on phones without Root rights, in which case the use of a PC becomes mandatory.
💡
If the flash drive is defined as empty but the space is occupied, it is likely infected with a virus that hides files.
Safe extraction and error prevention
The final step in working with an external drive is to disable it properly, and ignoring the safe extraction procedure is the main reason for file system errors in the future. Unlike computers, smartphones don't have an "Extract" button, so you have to do it in software.
To do this, lower the notification curtain. There you will see a notification about the connected USB-You click on it, you'll see the Disable button or Secure Retrieval button, and only after the message "Can be removed" appears. USB-drive" should be physically removed flash drive or adapter.
Regular prevention will help to avoid problems:
- 🧹 Check the storage system once a month for errors.
- 🔄 Do not remove the flash drive at the time of data recording (blinking indicator).
- 📱 Keep system drivers updated through Xiaomi Update Center.
Compliance with these simple rules will prolong the life of both the drive itself and the charging port of your smartphone. Remember that frequent reconnection of devices “hot” creates voltage surges that can be critical for low-quality adapters.