Xiaomi smartphone owners often face a situation where media files do not appear in standard applications after installing a memory card, especially in the Redmi 8 Pro model, where the MIUI security system can block access to an external storage device, which is not a mistake, but a security mechanism of the Android operating system.
Modern versions of Android require explicit user confirmation to allow applications to access the file system. Without this step, even the System Gallery will not be able to scan the contents of the flash card, resulting in an empty screen or old pictures, even though the files are physically written to the drive.
In this guide, we will look at all the methods of solving the problem, we will look at standard settings, hidden menus and features of the file system, and understanding these processes will help you not only to open access, but also to organize the proper storage of data on the device.
⚠️ Note: Before manipulating the file system, we strongly advise you to copy important data to the computer. Errors in the settings of access rights can lead to temporary unavailability of files.
Why does the system block access to files?
Starting with certain versions of Android, Google has implemented strict security rules to work with external drives.Redmi 8 Pro smartphone runs under shell control MIUI, And that further reinforces these limitations, and the system shares the internal memory. SD-map to different logical sections.
When you insert a memory card, it is mounted as a separate storage.The Gallery app by default only has access to the internal /storage/emulated/0 partition.Scanning an external card requires a separate resolution, which is often not automatically requested when first run.
In addition, the file system can use exFAT or NTFS formatting, which require special drivers or rights to fully access. If the card was formatted on a computer, the folder structure may not be readable for a standard media scanner without additional configuration.
Another reason is media caching, and the system creates a file index to show it quickly, and if that index is damaged or not updated after you plug in the card, no new photos will appear in the feed.
Technical details of the Android Storage Access Framework
Android uses the mechanism SAF (Storage Access Framework, which isolates applications from direct access to files. This prevents data leakage if one of the applications is infected with malicious code. Xiaomi adds on top of this its limitations to protect system files. MIUI.> Basic configuration through the application menu The easiest way to solve the problem is to check the permission settings in the system menu. Often access is blocked at the application management level. You need to manually activate the necessary permissions for the system gallery. Go to Settings for your smartphone. Find Apps or Application Management. Search the standard Gallery on the list of all programs. MIUI There may be several galleries: system and Google. 📱 Open the Gallery app settings in the menu. 🔒 Click on the item "Application permissions». 💾 Find Memory or Files and Multimedia». ✅ Set the switch to the Allow position. If the switch is already active, try resetting it and turning it on again, which will force you to restart the permission check process, and then be sure to restart the device to apply the changes. Sometimes the standard Gallery just doesn't see new files until they're indexed, and you can run this process through File Manager, which is an integrated File Manager, which is effective when the rights are already given but the media scanner has failed. Open the Explorer app on the home screen. Go to category SD-Find the folder. DCIM Or Camera, where your photos are stored. Click on any file or folder to let the system know you're working on that partition. In some versions MIUI It helps to switch the display mode. Click three dots in the corner of the screen and select "Sort by date." This action can trigger a rescan of the directory. If the photos appeared in the conductor but not in the gallery, the problem is in the thumbnail cache. Method Efficiency Complexity Data loss risk Permission settings High Low No Media Scanner Restart Average No Card Formatting Maximum High Third Party Software Depends on Software Low Low Use of Third Party File Managers such as Total Commander or FX File Explorer can also help. They have their own scanning mechanisms and can force you to access hidden folders, and then the files will be visible in the standard gallery. Working with hidden system settings In the shell MIUI There are hidden menus that allow you to control access in more detail, and one of these tools is the Special Opportunities menu or the developer's settings. USB and external drives. To access advanced settings, go to Settings → Find the line version. MIUI And press it fast. 7-10 A notification will appear, "You became a developer." Now a new section will appear in the settings menu. → For developers, in this section, look for the configuration item. USB Make sure that you have selected the file transfer mode or MTP. Sometimes switching this parameter causes the system to re-question the connected one. SD-card and issue access requests for all media applications. ⚠️ Be careful in the menu "For developers». Changing unknown parameters can lead to unstable system operation or data loss. It is also worth checking the power saving settings. Aggressive battery optimization on Redmi 8 Pro can kill the process of scanning the gallery immediately after it starts. Go to the battery settings, find the Gallery and select the mode "No restrictions." If the software methods do not help, the reason may lie in the file system of the map. Android natively supports the formats of FAT32 and exFAT. If your card is formatted in NTFS (Windows standard), the phone can see the files, but you can not have the right format on the computer, you can only select the right one on the device to read them via the computer. If there is NTFS, It's important: Formatting will completely remove all data from the memory card. Be sure to back up the files on your computer before you start the procedure. Formatting to a compatible format: 💻 Connect the card to the computer through the card reader. 🖱️ Right-click on the card disk. 🛠️ Select "Format». 📝 In the File System field, select exFAT (for cards over 32 GB) or FAT32. ▶️ Click "Start" and wait until it's finished. After formatting, paste the card back into Redmi 8 Pro. The system will suggest setting up the drive. Select "Use as a portable storage" option, which will allow you to store photos and videos that will be available to other devices when you connect the card. Alternative solutions and third-party software When standard Xiaomi tools fail, Google Play apps come to the rescue. There's specialized software that can bypass access restrictions or provide a more user-friendly interface for working with files. One popular solution is the Google Photos app. It has its own access rights and often sees files where the system gallery is blind. Install the application, log in to your account and allow access to all the files of the device on the first run. Another option is to use file managers with a media player function, for example, VLC for Android or MX Player. They can scan the map independently of the system and display video and photos in their interface. This is a temporary but effective solution for viewing the content, which is also forced to create a file file file file-capable application. However, they need to be used with caution, as they interfere with the system's indexing processes. What if the Gallery sees a photo but does not open it? This indicates file corruption or codec incompatibility. Try opening the photo through Google Photos or a third-party viewer. If the file doesn't open anywhere, it may be corrupted when it's written. SD-Yes, if you stopped writing new data immediately after deleting it. Use a PC like Recuva by plugging the card in through the card reader. You have a high recovery rate. MIUI If you've lost a card, you might have reset the application permissions, recheck the access settings for Gallery and Explorer in the app menu, and if the memory card speed affects the display of the photo? Yes, slow cards (class below 10) can cause delays in miniature generation. Photos may be late or not at all. How do you check if the phone sees the card itself? Go to Settings → Phone → Storage. If the card is displayed there and its volume is indicated, then (iron) is working, and the problem is software.