How to move applications to SD card in Xiaomi Redmi 9: Full instructions

Owners of budget and mid-budget smartphones often face a lack of built-in storage, especially when the operating system and pre-installed services occupy a significant part of the available volume. Xiaomi Redmi 9, despite its popularity, in basic configurations can offer only 32 or 64 GB of memory, which quickly ends after installing a couple of heavy games and accumulating media files.

Transferring data to an external drive is not just a copy of files, but a complex process that requires understanding the structure of the Android file system. In this article, we will discuss in detail how to move applications to an SD card in Xiaomi Redmi 9 Android, what are the limitations of the MIUI shell and how to circumvent standard system prohibitions for maximum optimization. You will learn about formatting methods, the risks of data loss and how to turn a regular USB drive into a full continuation of the system partition.

It should be noted that not all programs can be ported with standard tools, as developers often block this ability to ensure the stable operation of their products. However, there are proven methods and third-party utilities that allow you to expand the boundaries of what is possible on your device.

Preparation of memory card and smartphone for work

Before you start any manipulation of the file system, you need to make sure that your external drive is technically correct and has a sufficient write speed. For comfortable operation of modern applications, it is recommended to use microSDHC or microSDXC cards of a class of speed not lower than Class 10 or UHS-I. Slow drives can cause "freeze" interface and long loading programs, which will negate all the advantages of expanding memory.

Insert the memory card into the corresponding slot of your Redmi 9, which is usually combined with a tray for the second. SIM-Use a special paper clip that comes with the kit to remove the tray, and make sure that the contacts of the card are downwards and the cut out angle matches the shape of the tray. Once the device is turned on, the system will automatically detect the new medium and suggest options for its use.

It's important to understand the difference between the modes of operation of the drive, because it depends on the future strategy of actions: you can use the card as a portable storage for photos and music, or try to integrate it into the system as internal memory. The second option requires formatting, which will lead to the complete deletion of all data, so back up important files in advance.

⚠️ Note: The process of formatting a memory card for use as internal memory will irreversibly destroy all the data stored on it. Be sure to copy photos, documents and videos to your computer or cloud storage before starting the procedure.

To check the compatibility and speed of your drive, you can use built-in diagnostic tools or third-party benchmarks. If the memory card was previously used in another device, it is recommended to perform full formatting in the exFAT or FAT32 file system via the smartphone menu.

Basic transfer of multimedia and documents through the Explorer

The easiest and safest way to free up space is to manually transfer heavy files like photos, videos and uploaded documents. The standard MIUI file manager has a reasonably functional interface that allows you to move large amounts of data quickly without losing folder structure, which does not require root rights and does not violate the device warranty.

To perform the operation, open the Explorer app and go to the Internal Drive section. Find the DCIM folders (where photos and videos from the camera are stored), Download (downloads from the browser) and WhatsApp or Telegram (messaging media files). Select the desired files with a long press and select the option to Move or Copy in the context menu.

• 📸 Move the Camera folder from the section DCIM to a memory card so that new pictures are saved immediately there (setting inside the Camera app).
• 🎵 Audio files and podcasts are best stored in a separate folder Music on an external medium for easy sorting.
• 📹 High-resolution video files take up the most space, their transfer will give the most noticeable result of freeing up space.

Once the files are moved, it is recommended to check their integrity by opening a few random photos or videos from a new location. If the files are opened correctly, you can safely delete their originals from internal memory. This simple procedure often allows you to free up 5 to 10 GB of space, which significantly prolongs the comfortable use of the smartphone.

💡

Configure the camera in the application to save the photo immediately on SD-To do this, open the camera settings, find the item "Save to" SD-"map" and activate the switch, which will prevent the internal memory from overflowing in the future.

Moving installed applications by standard means

Unlike file transfer, migrating installed programs to Xiaomi Redmi 9 has its own peculiarities due to Android security policy. Since version 6.0, Google has limited the ability to fully port applications, leaving developers the right to decide whether to move them. APK-In the shell. MIUI This process may also be hidden or restricted.

To check whether a particular application can be ported, go to the Settings menu. → Annexes → All applications. Select the program of interest from the list and find "Memory." If the developer has authorized the movement, the "Move to" button will be active. SD-Otherwise, the button will be missing or inactive.

Even if you successfully transfer the application data, you'll still have some of the internal memory, which is the system files and cache you need to run quickly, so don't expect to move a dozen games to free up the internal drive completely, but you'll definitely win a few hundred megabytes.

Some Google system applications and services are not subject to any kind of migration without a major system modification, and attempts to force them to migrate can cause them to malfunction, crash or crash the entire smartphone.

Use of the Memory function in MIUI settings

The MIUI shell installed on Redmi 9 provides its own storage management tools that sometimes work better than standard Android tools. In the memory cleanup section, the system analyzes disk usage and can suggest transferring certain types of data to an external medium automatically.

To access these features, open the Security app (green shield icon), which is the system control center on all Xiaomi devices. Select the Cleanup tool or Memory tool, where the system will show detailed fill statistics. There are often options for transferring large files or duplicates.

Use these built-in analyzers regularly, as they help to identify bloated messenger folders that can cover gigabytes of space, and cleaning up the cache and transferring media files through this interface is the safest way for the average user.

💡

The built-in MIUI tools are safer than third-party programs, as they take into account the specifics of the Xiaomi system and do not violate the integrity of system files.

Formatting a card as an internal memory (Adoptable Storage)

There is a more radical method to trick the system into thinking that it is a system that is not a system. SD-The card is part of an embedded drive, a feature known as Adoptable Storage that has been hidden by smartphone makers including Xiaomi, but can be activated via a developer menu or special commands.

Implementing this method on Redmi 9 requires debugging on the USB. Go to Settings. → About phone and seven times quickly click on the item "Version" MIUI", until you see the message "You're a developer." Then in the advanced settings, activate "Debug by" USB".

To start the formatting process, you will need to connect to a computer and install the ADB platform (Android Debug Bridge), and after connecting the smartphone in debugging mode, a command is executed that forcibly formats the card and encrypts it for use by the system, which makes the card unreadable on other devices without re-formatting.

adb shell sm partition public:16,0 private:84,0

This command breaks the card into two sections: one for files, the other for applications. However, it is worth remembering that the speed of internal memory of a smartphone is usually faster than the speed of even the fastest memory cards, so running heavy games from such a card can be accompanied by slowdowns.

⚠️ Note: Using a memory card as an internal memory significantly reduces the life of the memory card due to the constant recording and reading of system files.

Alternative methods and work with file managers

If standard methods don’t produce the desired result, third-party file managers like Total Commander or the likes of the file manager come to the rescue. FX File Explorer. These applications allow you to create symbolic links, redirecting the ways you store data from internal memory to the memory. SD-It's a complex method that requires attention, but it's effective for specific folders.

The idea is to rename the original folder in internal memory and link it to the folder on the memory card, and the system and applications continue to think they're working with internal storage, but in fact, the data is being written to an external medium.

• 🔍 Install a powerful file manager with root access or system rights support.
• 📂 Find a folder that takes up a lot of space (such as a card cache or video editor).
• ✂️ Move the contents to SD-map, and create a symbolic link to the vacant place.

This approach allows you to bypass the limitations of MIUI without having to format the entire map, but when you delete the application or reset the phone settings, the manual links can be lost and you will have to repeat the procedure again.

Redmi 9 users may also consider using cloud storage as an alternative to a physical map, with services like Google Photos or Yandex.Disk allowing them to store media files online, freeing up space on their device and providing access to data from any gadget.

💡

When working with file managers, always back up the folder structure before creating symbolic links. A mistake along the way can cause the application to stop seeing its data and delete it.

Frequently Asked Questions (FAQ)