How to get applications to download to SD-Map of Xiaomi Redmi 9

Owners of budget but productive smartphones often face a lack of built-in storage. Xiaomi Redmi 9 model is equipped with 32 or 64 gigabytes of memory, of which a significant part is occupied by the system and preinstalled software. When the free space runs out, the phone starts to run slower, and installing new games or programs becomes impossible.

Fortunately, the device supports microSD memory expansion, but the standard MIUI shell blocks direct installation of applications on the external medium by default, which is designed to ensure stability of operation, but is inconvenienced to users. In this article, we will discuss how to circumvent these restrictions and use the memory card to the maximum.

There are several ways to solve the problem, from standard settings to using special commands through the computer. It is important to understand that transferring applications is not always a panacea, since the speed of the card can be lower than the speed of internal flash memory.

Why Xiaomi is blocking the installation of applications on the map

Xiaomi’s file system policy is driven by the desire to ensure the highest interface response speed, the smartphone’s internal memory is much faster than most microSD cards available on the market, and if heavy applications are launched from a slow drive, it will lead to friezes and long downloads.

In addition, the security of data in Android is designed so that applications installed on an external medium can be less protected from access by other programs. The MIUI system strictly monitors this, prohibiting the standard means to transfer executable files (.apk) completely to an external drive. However, some of the data, the so-called cache and media files, can and should be moved.

Users often confuse internal memory with storage memory, which is a common concept that most modern Google services require that the core of the program be in the internal partition, circumventing this limitation requires the use of special tools, which will be discussed below.

⚠️ Warning: Forced transfer of system applications or important Google services to a slow memory card can lead to unstable phone operation, spontaneous reboots or interface freezes.

Preparation of SD-card for working with applications

Before attempting to transfer data, you need to make sure the quality of the drive used. Apps require a high-speed card, otherwise you will notice a significant loss of performance. The optimal choice is a class UHS-I or UHS-II cards marked Class 10.

The first step should always be formatting. Old files and file system errors can interfere with correctly identifying the map as a potential repository for programs. Put the card into the slot, wait for notifications and go to the storage settings.

In the Settings → About Phone → Storage menu, select your card and click “Clean” or “Format.” Remember that this process will completely delete all data, so back up important files to your computer or the cloud in advance.

Standard method of transfer through settings

The safest, though not always available for all applications, way is to use the standard Android functionality. Some programs allow the user to choose the installation site. → Annexes → All applications.

Select the desired application from the list. If the developer has provided portability, the button "Move to the port". SD-If the button is grey or missing, it means that the application is tightly tied to internal memory and standard methods do not move it.

You can also set the default map for downloading media files in the storage settings. Open the Camera app, click three bars in the corner, select Settings, and under Save on SD-"map" activate the switch. This will free up a lot of space for installing new programs.

And don't forget messengers. Telegram and WhatsApp can manually change the way you save your downloaded files, and this is done inside the apps themselves, under the data and memory section, and redirecting download streams instantly saves you internal space.

Adoptable Storage Mode with ADB

For Redmi 9 owners who want to make the system consider the card part of internal memory, there is a method called Adoptable Storage, which was hidden by Android developers, but it can be activated through USB debugging and a computer.

You'll need to turn on Developer Mode. To do this, quickly tap the MIUI version number 7 times in the About Phone menu. Then, in the advanced settings, activate Debugging USB. Connect the phone to your PC and install ADB drivers.

Run the following commands in the computer command line (by pre-recognising your card ID via the adb shell sm list-disks command):

adb shell sm partition disk:179,64 private

This command compulsorily formats the card and makes it an encrypted part of the system. SD-the card as a built-in drive, and new applications will be installed there automatically.

⚠️ Note: Once you use the partition command, the card will be encrypted and cannot be read on other devices (cameras, other phones) without full formatting, which will delete all data.

Alternative methods and work with cache

If sophisticated methods with ADB seem risky, you can use specialized file management utilities like Files by Google or SD Maid.They can't migrate the app itself, but are able to find and move its "heavy" cache, which often takes gigabytes.

Many games store additional data in the Android/obb or Android/data folder. Moving these folders to the map (if the file manager allows you to create symbolic links) can free up a significant amount of internal memory.

Another option is to use lite versions of apps, which are lightweight versions for Facebook, Instagram and other social networks that take up significantly less space and do not require constant expansion of memory, which is often a more effective solution than fighting the system.

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The safest way to free up space is not to transfer applications, but to remove unnecessary ones and clean the messenger cache, since the speed of the Redmi 9 internal memory is critical for the system performance.

Possible problems and solutions

After transferring data, users may find that the widgets on the desktop are missing or no longer updated, which is a normal system reaction to changing the path to the application files, usually just restart the device or reinstall the widget.

If the phone is slow, it may be that the card's writing speed has dropped or it's damaged. Check the card for errors using the H2testw utility on your computer. Cheap AliExpress cards often have real capacity much less than claimed, leading to cyclical overwriting and crashes.

In some cases, after the MIUI update, the storage settings may get lost and the system will require you to format the card again.Keep this in mind and always keep backups of important data in the cloud so you don't lose progress in games or documents.

Frequently Asked Questions (FAQ)

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Regularly back up data from SD-External drives are less reliable than the built-in memory of a smartphone, and can fail at any time without warning.