Owners of Xiaomi, Redmi and Poco smartphones often face a situation where the Android operating system blocks the recording of files to an external drive.This is not a device breakdown, but a built-in security mechanism that appeared in newer versions of MIUI and HyperOS firmware. The system restricts arbitrary access of applications to the file system so that malicious software can not damage your personal data or encrypt it.
When you try to download a file through a browser or save a photo from a third-party editor, you may see a notification that accesses the file. SD-This means that a particular application is not authorized to use external storage, and unlike internal memory, which is more flexible, external drives require separate authorization for each new tool. Understanding this principle is necessary for the correct operation of the gadget.
The solution is to set up the right access rights through the system menu, so you don't need complex utilities or superuser rights, just know where to click when you lock, to allow the recording. In this article, we'll take a look at the details of working with external memory on Xiaomi devices and fix reading errors.
Reasons for blocking recording on an external drive
The main reason for the restrictions is Android’s security policy, which has been tightened significantly in versions 11, 12, 13 and later. Google has implemented Scoped Storage, which isolates application data from each other, so that no program can scan the entire contents of the flash card without the user’s knowledge. For Xiaomi with their MIUI shell, this has become an additional layer of protection.
Often users confuse software lock with physical problems. If the memory card is damaged or has a file system the phone doesn't understand, access will also be restricted.The standard format for Android is FAT32 or exFAT. If your flash drive is formatted in NTFS, the smartphone can only read files, but won't let anything be written or changed without special drivers.
⚠️ Note: If you format your memory card as “internal memory,” it will be encrypted and cannot be read on other devices or computer without unlocking through your particular phone.
Also, some built-in applications, like the standard Camera or Gallery, have automatic storage access. Problems usually arise with browsers, torrent clients, and office editors. Each of them requests permissions separately. If you update the application or reinstall the system, the access settings may have reset and you will have to repeat the procedure.
Preparation of the memory card for work
Before allowing access to specific applications, you need to make sure that the drive itself is correctly defined by the system. Insert the MicroSD card into the slot before clicking. The phone must emit an audible signal or display a notification about the connection of a new device. If this does not happen, check the contacts on the map or try to restart the smartphone.
Go to the storage settings to check the status of the drive. The path usually looks like: Settings → About Phone → Storage (in some versions of MIUI, the path may differ: Settings → Memory). Here you will see the total volume and occupied space. If the card is displayed as “damaged” or “Not supported”, it must be formatted.
☑️ Checking the map's readiness
Be careful when formatting: this process completely deletes all data. If there are important files on the map, copy them to your computer first. Once cleaned, the system will create a new file structure optimized for Android, which eliminates logical errors that may have caused the ban on writing previously.
There's also a memory pooling feature, but on Xiaomi smartphones, it's often hidden or unstable. It's better to use the card as a portable storage. It allows you to quickly retrieve files through the card reader on your PC and ensures compatibility with other devices. Flexibility is more important than a small gain in internal memory.
Main method: setting up through notification
The easiest and most correct way to allow access is to act through a system request. When an application (such as a file manager or browser) tries to save a file to the system. SD-And the map, you'll see a pop-up on the screen, and it'll say, "This app needs storage access." Don't ignore it.
Click Allow or Configure in this window, and the system menu will open, where you want to find your memory card in the list on the left or in the center of the screen «SD-map" or has a brand name (e.g. Sandisk, Kingston) Select a line with the card name, and then click Use this document or Select at the bottom of the screen.
| Action. | Interface element | The result |
|---|---|---|
| Attempted recording | A pop-up window | The system blocks the action. |
| Choice of source | Review menu | Display of root folders |
| Confirmation | Use button | Access is allowed permanently |
Once confirmed, the system will remember that choice, and the next time the same application wants to write data, it will do it automatically, without any questions asked, and that only applies to the specific application-mass card bundle, and if you run another browser, you'll have to do it again.
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If the “Use this document” button is inactive (gray), try to select the folder inside the card rather than the root directory, although 99% of the time you need to choose the root.
Manual setting of rights in the application menu
Sometimes the system notification doesn't appear, or you accidentally click "Disallow" and forget where to change it, in which case the rights can be manually managed through the MIUI settings. This is a more reliable way to control all permissions at once. Open Settings → Apps → All applications.
Find the app you want to use (e.g. Chrome, Telegram, or MX Player) and click on it to open the information page. You're interested in App Permissions or Rights. Depending on the version of Android, it may be called differently, but the essence is the same thing: data access management.
In the rights list, look for Memory, Storage, or Files and Media. Make sure the switch is in the "Allowed" or "Always" position on newer versions of Android 13.+ The access can be more detailed: "Allow management of all files." This option gives you complete control over the file. SD-card.
⚠️ Note: All File Management gives the app full access to all contents of your flash drive, including deleting system files from other programs.
If you can’t find the app you want in the All Apps list, check the Hidden folder or search by settings. Some Xiaomi system services can be hidden by default. Once you change the settings, it’s recommended to close the app completely (unload from memory) and run it again so that the changes take effect.
Using File Managers to Access
Standard MIUI Explorer is not always convenient for working with external drives, especially if you need to move system files or archives. Experts recommend installing a third-party file manager, such as Total Commander, FX File Explorer or Solid Explorer. These applications have built-in permission request mechanisms.
When you first run the advanced file manager will ask for permission to access the storage. Unlike the standard request, here you can access hidden Android folders (folder). Android/data), which in the new versions of the OS are hidden from the ordinary user, this allows you to clean the cache of messengers or transfer the cache of games to the user. SD-map.
The Path to Hidden Data: /Android/data/com.example.appTo work with these directories, the file manager uses a special system API, which will open the system folder selection window where you will need to click "Use this folder" and confirm the action, and then you can copy, move and delete files in protected areas of external memory without restrictions.
Why can’t you just copy files through your computer?
Solving Typical Errors and Problems
Even after setting up, there can be errors. Often there is a message "File corrupted" or "Insufficient rights", although access is formally allowed. This may be because the application tries to write the file to the root directory, and modern Android system prohibits the creation of files at the root of external drives.
Another problem is slow recording or getting stuck when using the card, which is a sign that the memory card is of poor quality (speed class below 10) or has physical wear and tear. SD-If the phone is constantly losing access to the card, try replacing the drive with a faster one (UHS-I higher).
- 📱 No Access Error: Check if Read Only is enabled on the card adapter (if you use an adapter).
- 💾 File is not deleted: restart the smartphone, sometimes the recording process freezes in the background.
- 🔒 The permission request appears constantly: uninstall the application and re-install it by resetting the old access configurations.
Also worth checking is if the card is full. If less than 100 MB is free, the system can block new write operations to prevent damage to the file system. Clean up unnecessary files regularly. Use cleaning widgets or Xiaomi's built-in tools to optimize memory.
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Stability of work with SD-The card is 80 percent dependent on the quality of the drive itself, and only 20 percent on the phone's settings.