How to find a flash drive on a Xiaomi smartphone: from the conductor to hidden settings

Did you connect the USB- drive to Xiaomi via the OTG- cable, but the smartphone stubbornly does not see files? Or the flash drive is detected but disappears from the conductor after the reboot? The problem is familiar to many owners of Redmi, POCO and Mi devices - especially after the MIUI updates. In this article, we will analyze all the ways to search for a flash drive on Xiaomi Android smartphones: from basic checks to hidden system functions and commands ADB.

It’s important to understand that the problem can be in the phone’s settings (e.g., the OTG- mode disabled) and the flash drive itself (incompatible file system or damaged sectors), and we’ll go beyond standard tips like “reconnect the cable” to offer unique diagnostic methods, including analyzing system logs and forcing the drive to be mounted.

If you are using Xiaomi 12T, Redmi Note 11 or older model on MIUI 13/14, the instructions below will fit with the features of your firmware. For owners of devices with HyperOS (for example, Xiaomi 14), we add some remarks – the new shell changes the logic of working with external drives.

1. Basic check: is the flash drive connected correctly?

Before digging into the settings, make sure the problem isn't physical connectivity. Here's a checklist to help rule out obvious errors:

Is the flash drive formatted in FAT32/exFAT (NTFS is not supported without root)|

Do you use the original OTG- cable (Chinese "nouneim" often don't work)|

Is the flash drive connected directly, without hubs or extension cords|

Have you tried restarting your phone with a connected drive?-->

Pay special attention to the file system type. Xiaomi smartphones by default support only FAT32 and exFAT. If your flash drive is formatted in NTFS, it will not be seen even through ADB - you will need to reformat (with loss of data!).

1. Connect the flash drive to the computer.
2. Open Disk Management (Win + R → diskmgmt.msc).
3. Look at the File System column opposite your drive.

If the flash drive is on a PC but not on Xiaomi, the problem is definitely in the phone. If it's not detected anywhere, the drive is damaged.

💡

On some models (e.g., POCO F4), the OTG- mode is disabled after the MIUI update. To return it, go to Settings → Connected Devices → USB and turn on the option “File Transfer”.

2. search for a flash drive through a standard MIUI conductor

In MIUI 12-14 and HyperOS, external drives are displayed differently in the conductor.

1. Open the Files app** (the blue tag folder icon).
2. In the top bar, select the Device tab (or Local Storage in HyperOS).
3. Scroll down to External Storage or USB- Drive.
4. If the flash drive is connected but not displayed, tap the three dots in the upper right corner and select Update.

In HyperOS (on Xiaomi 14, 13 Ultra), the path is different:

1. Open the "Files"** → Categories.

If the conductor stubbornly does not see the flash drive, but you are confident in the serviceability of the cable, proceed to the next section - you will need manual mounting.

3. Check OTG and USB settings in MIUI

Even if the flash drive is physically connected, the OTG- mode can be disabled at the software level. In different versions of the MIUI, the path to settings is different:

On some models (e.g. Redmi 9A), the OTG option is hidden to find it.

1. Open Settings and enter in the OTG search.
2. If there are no results, try entering USB or Connected Devices.
3. On older versions of MIUI (up to 11), OTG is enabled via Settings → Additional → Developer → USB configuration.

Yeah, it always works.|

Sometimes it doesn't determine |

Never worked OTG|

I haven't tried it)-->

If there is no OTG in the settings, this can mean:

• 🔌 Hardware problem: The port USB is physically damaged (check on charging - if the phone is charging slowly, the port is faulty).
• 📱 Software failure: Resetting or flashing is required.
• 🔄 Manufacturer limitation: On some budget models (e.g., Redmi A1), OTG is disabled at the kernel level.

💡

On HyperOS (Xiaomi 13/14) devices, OTG- mode is automatically enabled when you plug in a flash drive, but may require confirmation in the notification. If the notification does not appear, check the permissions for the Files application in Settings → Applications → Permissions Management.

4. Search for a flash drive through ADB (for advanced users)

If standard methods don’t work, you can try to force the USB drive to be mounted via ADB (Android Debug Bridge), which is suitable for MIUI 13/14 and HyperOS, but requires the developer mode to be enabled.

First, activate the debugging over USB:

1. Go to Settings → About phone and 7 times tap on the MIUI version.
2. Back to Settings → Additionally. → For developers.
3. Turn on USB debugging and confirm the permission.

Now connect your phone to your PC and execute the commands:

adb devices


adb shell




sm list-disks

If you have the flash drive connected, you'll see a string like disk:179,XX. To mount it manually:

sm mount -w /dev/block/vold/disk:179,XX /mnt/media_rw/USB_Drive

Replace XX with the real disk number from the sm list-disks output. After mounting, check for the flash drive in /mnt/media_rw/USB_Drive via ADB Shell or any file manager with root access.

adb shell


ps -A | grep media




Kill [PID process media.rkp

After that, the flash drive should appear in the conductor.-->

If ADB doesn’t see the flash drive at all, the problem may be:

• 🔌 Faulty OTG- cable (try another one).
• 📁 A damaged file system (format the flash drive on the PC).
• 🛠️ A failure in the Android kernel (reflashing or rolling back to the older version MIUI will help).

⚠️ Warning: ADB root-enabled commands can cause data loss or system failure. Don't execute them unless you're sure of the action. On HyperOS devices, some sm commands can be blocked.

5. Diagnostics through the engineering menu (for experienced)

If the flash drive is not detected even through ADB, you can try to check for it in the Engineering Mode, which works on most Xiaomi devices, but you need to be careful that the wrong actions can disrupt the phone.

To open the engineering menu:

1. Type the code on your phone keyboard: ##4636##.
2. Select hardware (or hardware info) information.
3. Scroll down to the USB or Storage section.

In this menu, you'll see a list of connected devices. If the flash drive is defined here, but it's not visible in the conductor, the problem is in the MIUI File Explorer.

• 📂 Install an alternative file manager (e.g., Solid Explorer or FX File Manager).
• 🔄 Clear the Files app cache: Settings → Apps → Files → Storage → Clear the cache.
• 🔧 Reset the Files app settings to factory settings.

On some firmware (for example, Xiaomi.EU) in the engineering menu is available USB Settings, where you can force OTG or change USB mode to MTP + OTG.

⚠️ Warning: Do not change other options in the engineering menu unless you know what they are intended for, for example, changing the Modem or RF settings may cause the network to lose or the processor to overheat.

6. Alternative ways: from Cloud OTG to root access

If none of these methods work, there are radical solutions, and let's look at them by their risk level.

🔹 Method 1: Cloud OTG (for Wi-Fi flash drives)

Some modern flash drives (for example, SanDisk Connect or Kingston Wi-Fi Drive) support Wi-Fi connection.

1. Turn on Wi-Fi on the flash drive (usually with a button on the case).
2. Connect to her network from your smartphone.
3. Open the browser and enter the address specified in the instructions (usually 192.168.1.1).

🔹 Method 2: Root + hand mounted

If you have root access, you can mount the flash drive via Terminal Emulator:

su


mkdir /sdcard/usbdrive




mount -t vfat /dev/block/sda1 /sdcard/usbdrive

Replace vfat with exfat if the flash drive is formatted in exFAT.

🔹 Method 3: Flashing to custom software

On some devices (for example, the Redmi Note 8 Pro), OTG does not work due to errors in the MIUI kernel. The solution is to install custom firmware like LineageOS or Pixel Experience, where OTG support is implemented correctly.

Before flashing back the data through TWRP or Mi Flash Tool.

💡

On MediaTek devices (e.g., Redmi 10C), problems with OTG are often solved by updating VCOM- Drivers on PC and re-routing through the SP Flash Tool.

7. Frequent errors and their solutions

Let’s analyze typical situations when the flash drive is not determined on Xiaomi, and how to fix them:

If your problem doesn’t make it to the table, check:

• 📱 System Logs: run adb logcat | grep -i usb via ADB and look for errors of the form E/UsbHostManager.
• 🔧 Developer settings: Turn off USB- port when you lock (if any).
• 🔄 Settings reset: Sometimes a factory reset helps (but deletes all data!).

FAQ: Answers to Frequent Questions