How to make an SD card internal memory on Xiaomi

Many Xiaomi smartphone users face the unpleasant situation when the built-in storage is overflowing and the system starts to work slowly. Modern applications take up gigabytes of space, and the standard 64 or 128 GB becomes catastrophically small for comfortable use. The built-in memory expansion mechanism on Android often hides the possibility of full use of the MicroSD card, offering only photo and music transfer, but not installation of programs.

There is a proven way to turn an external drive into a full-fledged extension of the system partition, allowing you to install games and heavy applications directly on the USB drive. To accomplish this task on Xiaomi devices, you will need to perform several specific actions, since the manufacturer by default hides this feature in the developer menu.

It is important to understand that once formatted, the card will no longer be read on other devices without re-marking, the data on it will be encrypted and linked to a specific smartphone. Before starting the procedure, be sure to back up all the important files, photos and documents that you plan to store on the media.

Preparation of a memory card and smartphone

The first step is to choose a quality media, because its speed will depend on the performance of the entire system. Cheap cards class 4 or 6 can significantly slow down the launch of applications, creating a “brake” effect. The optimal choice will be models labeled UHS-I Class 10 or higher, which provide high speed write and read.

Make sure your Xiaomi or Redmi smartphone is fully charged, as the formatting process should not be interrupted. Connect the device to a Wi-Fi network for stable Google services that may be required to verify the application license after porting.Put the card into the slot and wait for notifications of the new drive connection.

⚠️ Warning: All data on the map will be permanently deleted during the formatting process. If there are important documents on the flash drive, copy them to your computer or cloud storage before you start work.

Check the version of the operating system in the Settings → About phone. On some global MIUI firmware, Adoptable Storage may be blocked by the manufacturer at the software level, in which case standard menu methods are not enough, and you will need to use debugging over USB.

Activation of the developer mode and debugging

To access hidden system functions, you need to activate a special menu. → About the phone and find the line "Version" MIUI". Press it. 7-10 Once in a row before the pop-up message "You became a developer" appears".

Then, in the main settings menu, you'll see a new option called "Additional" or "Extended settings," and you'll find the "Development for" section there, and you'll turn on the "Debug on USB" switch, and the system will give you a risk warning, and you'll confirm the action by clicking "OK."

Now you need to connect your smartphone to your computer. Use the original cable or quality analogue that can transmit data, not just charge the device. When you first connect, you'll see a request for debugging permission on your phone screen -- check "Always Allow" and click "Allow."

On your computer, you'll need the Android Debug Bridge (ADB) utility, which is a standard Android platform tool that allows you to control your device from your PC. Download the Platform Tools package from the official developer site and unpack it into a convenient folder, such as the root of the C disk.

Formatting via computer and ADB

Open the command line or PowerShell in the folder with ADB utilities. Enter the adb device command to check the connection. If everything goes well, you will see your device's serial number and "device" status.

To force the adaptive storage function to be enabled, type the following command: adb shell sm set-force-adoptable true. This removes the software limitation that is often found on Xiaomi smartphones, preventing the card from being formatted as internal memory.

adb shell sm partition public:1792,0 mixed 50

In this command, public:1792.0 is the disk identifier (may differ, it can be recognized through the adb shell sm list-disks command), and mixed 50 means that 50% of the space will be given to internal memory, and 50% will remain for files. You can change the proportion, but mixed mode often works more stable.

Once you have the command, you'll see a formatting notification on your smartphone screen, it can take a few minutes, don't turn off the cable or take the card out until you've completed the operation, and it will automatically restart the storage services.

Setup of data and application transfer

Once formatted successfully, the system will suggest moving the data, select the option to move the content to free up space on the built-in drive, and now the map works as part of the system partition.

To manage which applications will use the new memory, go to Settings → Annexes → All applications. Select the program you want, click "Memory" and then "Change." If the app developer hasn't banned portability, you can choose to choose between them "SD-map".

Not all apps support external storage. Google's major games and system services often stay on internal memory to ensure stability, but photos, messengers and browsers work well with extended storage.

Use the file manager to redirect the download folders. In your browser or torrent client settings, specify the path to the new map, which will prevent the main partition from filling up quickly.

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Check the card status periodically in the storage settings. If the system reports read errors, it may be worn out and needs to be replaced.

Possible problems and ways to solve them

One of the common problems is the message "SD-The card is "damaged" after rebooting. This can be due to unstable contact in the slot or the use of a poor-quality adapter.

If applications stop running, check permissions. Once formatted as internal memory, old content may become unavailable, and you may need to re-authenticate to some services or reconfigure file paths in media players.

⚠️ Attention: Speed of the card operation SD is always lower than the internal memory of the eMMC or UFS. Heavy games can take longer to load, and the interface can slow down when used actively.

In some cases, MIUI can ignore settings and force data to be written into internal memory, a feature of battery optimization and background processes, and the solution may be to disable MIUI optimization from the developer menu, but this will reduce energy efficiency.

If you decide to return everything as it was, you will have to use the computer again. [ID_Disk] deletes partitions, but all data on the map will be lost.

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The stability of the system depends on the quality of the memory card. Savings on the drive will lead to constant lags and possible malfunctions in the smartphone.

Advantages and disadvantages of the method

Using the card as internal memory is a trade-off: on the one hand, you get free space for dozens of new applications, and on the other hand, you sacrifice speed and reliability.

The main advantage of the method is the ability to install heavy programs on budget devices with a small amount of internal storage, which prolongs the life of the smartphone and delays the need to buy a new model, and also makes room for system updates.

The downside is that you can bind the card to the device, you can't just take out the flash drive and paste it into another phone to see the photo, it's formatted in a file system that only this smartphone can understand, and you'll always need the phone to extract the data.

In addition, the rewrite cycles of memory cards are usually less than those of embedded chips; when you work actively with applications, the card can fail faster than usual, and regular backup becomes a mandatory habit.