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Modern Xiaomi, Redmi and POCO smartphones often have large amounts of internal memory, but users still actively use microSD cards to store media files. However, after updating the system or installing a new application, many people face the unpleasant situation: the gadget sees the drive, but refuses to write data to it or show content. Android security requires explicit confirmation of rights for every application trying to work with an external media.
This problem is especially relevant for the MIUI shells and the new HyperOS, where data protection algorithms have become stricter. Instead of a simple “not enough rights” error, the user sees an empty screen in the file manager or a message about the inability to save the file. Understanding the SAF (Storage Access Framework) mechanism will help you quickly regain control of the file system of your device without losing data.
In this article, we will discuss how to force SD card access on Xiaomi, bypassing standard system restrictions. We will look at the standard Explorer, third-party utilities and system settings of the developer. Access recovery will take only a couple of minutes if you follow the correct algorithm of actions.
Why the system blocks access to external storage
Starting with certain versions of Android, Google changed its security policy regarding external drives, where applications could request access to the entire file system at once, creating vulnerabilities, and now each application, whether it is a video player or a voice recorder, must receive a separate, explicit user permission to work with a specific directory or an entire memory card.
Xiaomi device owners often notice this lock after updating their firmware, forgetting previously granted rights or marking them as invalid due to changing app signatures, a security mechanism that prevents malware from accessing your personal photos and documents without your knowledge.
⚠️ Note: If you provide access to SD To a card to an unknown application from an unreliable source, it can copy or delete all your data.
In addition, the card file system itself can be corrupted or formatted in a format that requires rechecking rights, such as when switching from FAT32 to exFAT or when using the card from another device, the file manager may require reauthorization of the path to the data.
Set up rights through a standard file manager
The easiest way to solve this problem is to use Xiaomi's built-in Explorer app, which is the one that most often requests confirmation from the system, and when you first try to copy a file to a map or open its contents in a gallery, a system dialog box appears on the screen.
This window will have a button that tells you to go to settings or select a folder, and you have to click on the one that lets you select the card's root directory «SD-card" or has an appropriate icon. Once you select the folder, the system will ask you to confirm the action.
☑️ Access algorithm
The key here is the "Use this folder" button, which is located at the bottom of the screen and often goes unnoticed by users who are looking for the "OK" button in the center, without pressing this button, access will not be provided.
If the automatic window doesn't appear, try creating a new file or folder right at the root of the card through the explorer, which will force you to request permissions. Some versions of MIUI also require you to enable the display of hidden files to see the system directories.
Using DocumentsUI for forced access
The Android file management system is based on DocumentsUI. Sometimes the standard Xiaomi interface can’t handle the rights request properly, and then you need to turn to the “clean” Android interface. This is especially useful if the standard Explorer freezes or doesn’t show the confirmation button.
You can use the hidden settings menu or run the component directly, and in some cases, cleaning the Documents cache helps. Go to your phone's settings, find the Apps section, and select All Apps.
In the list, find the Documents app. Click on it and select Clear Data and Clear Cache, which will reset your current access settings and force the system to re-request permissions the next time you access the memory card.
Hidden code to run DocumentsUI
After resetting, try to reopen any folder on your SD card, and the system should give you a standard Android window telling you to select a folder and click "Allow," a method that often helps when a software failure blocks the file system from working properly.
Solving access issues in different versions of MIUI and HyperOS
The MIUI 12, MIUI 13, 14 and the new HyperOS have their own rights management features. In older versions, access was often blocked aggressively, requiring manual confirmation for each application. Newer versions of HyperOS have improved integration, but added new layers of privacy protection.
MIUI 14 and above has advanced access control. If an application can't write a file, check not only memory rights, but also special permissions. Go to Settings → Applications → All applications, select the desired application (for example, VLC or MX Player) and find the "Resolutions" option.
Make sure the slider opposite Memory or Files and Media is activated. In newer versions of Android, this item may be called Access to All Files. Without this global permission, the app won't be able to see the SD card, even if you give it access through Explorer.
| System version | Type of request for rights | Feature of the setup | Frequent error |
|---|---|---|---|
| MIUI 11-12 | Basic SAF | Request on first application | Background locking |
| MIUI 13-14 | Expanded SAF | You need to select a root folder | Resetting rights after update |
| HyperOS | Strict control | Additional verification in "Protect applications" | Conflict with memory optimization |
| Android 13+ | Scoped Storage | Access to media files only | Invisibility of system folders |
HyperOS users should also pay attention to the Application Protection feature, which, if enabled for the file manager, may not allow other programs to access files through it. Check security settings and add exceptions for trusted applications.
Working with third-party file managers
Standard tools aren’t always convenient, and many users install Total Commander, X-plore, or FX File Explorer.These apps have their own rights request mechanisms that may conflict with Xiaomi’s system limitations. When you first run such a manager, be sure to follow the original setup wizard.
When you open a third-party explorer and try to navigate to an SD card, it will show you a message to provide access. Click "OK" or "Allow", and then the system folder selection window opens. Navigation in this window may be different from the usual, be careful.
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Use Total Commander with SD-Access plugins. It automatically requests the right rights and allows you to work with the card as if it is built-in memory, bypassing many of the limitations of Android.
It’s important to understand the difference between “media access” and “all files access.” For a full SD card, third-party managers often need the second type of access. In Android 11 and later, this is critical for working with archives and system files.
If the card still doesn't show up after granting permissions, try removing and installing the manager again. When you re-install the application, it will ask for all the necessary permissions again, which often solves the problem of "stuck" access settings.
Diagnostics of physical and program errors of the card
Sometimes the problem is not the access rights, but the status of the memory card itself. If the file system is damaged, Android can block the record to prevent data loss, in which case no permission settings will help until the disk is checked.
Try to remove the card and paste it into your computer. Run error checks through the disk properties in Windows or use the chkdsk utility. If the computer also doesn't see the card or asks you to format it, the drive may have failed.
⚠️ Note: Formatting a memory card will completely destroy all data on it.Be sure to copy important files to your computer before formatting, if possible.
Also check the physical Lock switch on the SD card adapter (if you use it to check). If it is moved to the lock position, the phone will only be able to read data, but not write it. Xiaomi smartphones do not have such a switch, but it is on adapters.
In rare cases, re-formatting the card right on your phone helps. Go to Settings → About Phone → Memory (or Advanced Settings → Memory), select your SD card and click Clear. This will create a new, clean file system that is compatible with the current version of MIUI.