Modern Xiaomi smartphones, despite high internal memory rates, often require additional storage space for media. Users actively use microSD cards, but face intrusive system notifications about the lack of rights. Android operating system, which runs the MIUI shell, for security reasons restricts arbitrary access of applications to external drives. This means that when you try to save a file or start scanning the media library, you can see a request for permission.
Ignoring this step makes it impossible to fully work with files stored on an external medium. Many device owners mistakenly believe that the card is faulty, although the problem lies solely in software constraints. Unblocking access is a routine procedure that takes only a few seconds, but requires understanding the structure of the settings menu.
In this guide, we will discuss how to properly grant the necessary rights so that your file manager or gallery can read and write data seamlessly. We will look at both standard methods through system dialogues and solving frequent errors when working with external drives on Redmi and Poco devices.
Why the system blocks access to external storage
Since Android 6.0, Google has implemented a security mechanism known as Scoped Storage, which isolates app data from each other and limits their access to shared storage, including the use of a single device. SD-On Xiaomi smartphones, this is implemented through strict permission control: no application can change or delete a file on an external card without the explicit consent of the user, confirmed through the system explorer.
This is a measure that is necessary to protect against malware that could encrypt or delete your personal photos and documents, but for legitimate programs such as video players or voice recorders, this creates a temporary inconvenience, and the system requests confirmation each time to make sure that you are the one who initiates the action, not the background process.
There is also the concept of adaptive storage, where the memory card becomes part of the internal memory of the device, in which case all system processes can access it, but you can no longer extract the card without losing data, and in most cases, users choose the card as a "portable storage", which causes constant requests for access rights when changing applications.
⚠️ Note: If you give access to a card root folder to one application, it does not mean that other programs will receive it automatically.
Understanding this logic helps you not panic when you see another window with a requirement for rights. This is not a system error, but a regular operating system security mechanism that works the same on all modern smartphones.
Primary configuration and formatting of the map
Before allowing access to specific applications, you need to make sure that the memory card is correctly recognized by the system. After physically installing the drive in the slot, Xiaomi usually offers to choose the type of use. If you choose the option "Use as a portable storage", the card will be formatted into a file system compatible with Android, but available for reading on a PC.
The formatting process destroys all data, so make sure that the map is not important information. Once the procedure is complete, the system will create hidden service folders necessary for the file system to work, and it is with these system directories that access rights conflicts often arise.
☑️ Checking the map's readiness
If the automatic setting window doesn't show up, go to Settings → About Phone → Storage. Here you'll see the status of the card. If it shows as "Empty" or "Not supported", it may be that the contacts are contaminated or the card is corrupted. In normal condition, the system should show the amount of free and occupied space.
It is important to note that older SDHC cards can run unstable in new smartphones that require SDXC. Make sure your card matches the speed class and volume supported by a particular phone model.
How to provide access through a system conductor
The most common scenario that requires user intervention is when you try to open a card through the standard Explorer app or third-party file managers. SD-maps, a dialog box appears on the screen with the text "Give access".
In this window, there's a button, usually at the bottom, which is called "Access" or "OK." Once you click, the system will switch you to the folder selection interface, and by default, the root directory of the map is highlighted, which is the most convenient solution.
At the bottom of the folder selection screen, you'll see the "Select" button. By clicking on it, you'll confirm the permission for the current application to work with all the contents of the drive, and then for some time (usually a few hours or before rebooting), the system won't bother you with requests for that particular application.
⚠️ Note: Do not provide access to Android system folders unless you need to. Limit to the card root folder or specific directories with media files.
What to do if the "Select" button is inactive?
Remember, Android access rights are tied to a specific application package, and if you install a new player or document editor, you’ll have to repeat the procedure for that.
Configuring permissions for specific applications
Sometimes the automatic request does not appear, but the application reports a write error, in which case you need to manually check the permissions in the smartphone settings. Go to Settings → Applications → All applications and find the desired program in the list.
From the app menu, select "Application Permissions." You're interested in "Files and Media Content" or "Memory." The switch must be activated. On newer versions of MIUI and HyperOS, a more detailed setting is available: you can only allow access to photos, music or all files.
To fully work with SD-The card recommends that you select the option "Allow all files to be managed" if you can, especially for file managers like Total Commander or the likes of the file manager. FX File Explorer.
| Type of application | Required level of access | Security risk | Recommendation |
|---|---|---|---|
| File manager | Full access to all files | Medium. | Definitely a job. |
| Video player | Media files only | Low. | Enough to watch. |
| Dictaphone | Recording of audio/Memory | Low. | Needed to be preserved |
| Games | No need. | High-pitched | Better to ban it. |
Regularly checking these settings helps to avoid situations when after updating the application resets its rights and stops seeing files.
Solving Access Problems and Reading Errors
Even after granting all rights, there can be errors like “File corrupted” or “No access.” Often this is due to the card file system. Android works best with the exFAT format for cards larger than 32 GB. If your card is formatted in NTFS, the phone can only read files, but can’t write new ones without special drivers.
Another common reason is that the card was not retrieved correctly in the past, and if you took the card out without first unmounting it in the system, the file table could get damaged, in which case the smartphone will prompt you to check and correct the errors on the next insert.
If the system writes "SD-Card damaged, try connecting your phone to your computer in file transfer mode (MTP) And check the chkdsk drive on Windows, but it's often easier to save data on your PC and format the map again with the smartphone itself.
⚠️ Warning: Never remove a memory card while recording video or downloading files.This is guaranteed to lead to logical errors of the file system and data loss.
It's also worth checking if the card is full, and when you fill more than 95% of the volume, the write speed drops, and the system can block new operations, simulating the lack of access rights.
Using the card as internal memory
For users with a small amount of built-in storage, the question of combining memory is relevant. SD-So it becomes an integral part of the system, and in that case, all applications can access it automatically, without any further requests.
But there are some major drawbacks to this method: the card is encrypted and linked to a particular device, you can't insert it into another phone or computer, you can't read it, and you can also slow down the speed of the interface if the card is not a UHS-I or higher.
To activate this mode, go to Settings → Warehouse, select yours. SD-Click on "Configure" and select "Use as internal storage" from the menu that appears.
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Use only trusted brand cards (SanDisk, Samsung, Kingston) labeled A1 or A2 for use as internal memory. Cheap cards will quickly fail due to heavy recording.
This method is ideal for installing heavy games and apps, but it is not recommended for storing important photos that you plan to transfer to other devices often.
Safe extraction and maintenance
Finishing the external drive correctly is a guarantee of its longevity. Be sure to do software unmounting before physically removing the card, which ensures that all the write buffers are cleaned and the file system remains intact.
To do this, open the Settings. → Warehouse, click on your name. SD-Only after you have a notice that the card can be safely retrieved, use the paper clip to open the tray.
Check the card regularly. Every few months, it's helpful to plug your phone into the charger and let the system do background error checks. Also, keep track of the temperature of the device when you're recording actively, because overheating can cause you to temporarily block access.
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Timely software extraction of the card prevents 90% of logical errors and data loss during subsequent use.
If you notice that your phone is taking longer to open a photo or video from a card, this is the first sign of the need to check its health or replace it with a faster model.