How to transfer applications to SD-Map in Xiaomi Redmi Note 9: all the ways and nuances

Introduction: Why to transfer applications to SD-map in Redmi Note 9

Owners of Xiaomi Redmi Note 9 Often face a lack of internal memory, especially if the device is used for games, photos or installing a variety of applications. 64/128 GB of internal memory system MIUI And the cache of applications quickly takes up free space. SD-The map seems to be a logical solution, but in modern versions of Android and MIUI This process has limitations.

Unlike the older versions of Android (before) 6.0), where transferring applications to a memory card was a standard function, in the Redmi Note 9 s MIUI 12/13/14 This is complicated, and manufacturers are limiting the transferability because of the risk of reduced productivity (SD-cards slower than internal memory UFS 2.1) But there are workarounds, both formal and root-rights-based.

In this article, we will analyze all the current ways of transferring applications to SD-The map in Redmi Note 9, including:

• 🔹 Standard Transfer through Settings MIUI (restrictively)
• 🔹 Use of the SD-The card as an internal storage (Adoptable Storage)
• 🔹 Transfer through ADB (without root rights, but with nuances)
• 🔹 Alternative methods for games and heavy applications

Also consider why some apps can’t be ported, how to check compatibility SD-Maps and what to do if applications do not work after transfer.

Preparation: which SD-The card is suitable for the Redmi Note 9

Before you move applications, make sure your SD-The card meets the requirements of Xiaomi Redmi Note 9. the device supports microSD cards up to 512 GB (officially tested cards up to 256 GB), but there are nuances:

• ⚡ Speed class: Minimum Class 10 or UHS-I (U1/U3). For the use of the card as an internal storage is recommended U3 or A2 (Optimized for random recording).
• 📱 Format: The card must be formatted in exFAT or FAT32 (For cards up to 32 GB, when you configure it as internal storage, the system will automatically format it into ext4.
• 🔄 Manufacturer: Preference give brands SanDisk, Samsung, Kingston - they guarantee stable operation with the company. MIUI.

⚠️ Note: Cheap cards without certification can cause lags or errors when porting applications. Before buying, check the card for authenticity with utilities like H2testw (Windows or SD Insight (Android).

If you plan to use the card as an internal storage, consider:

⚠️ Note: Once formatted as internal memory, the card cannot be retrieved without losing data, and it will be encrypted and not readable on other devices.

Method 1: Standard Transfer through MIUI Settings

The easiest way is to use the built-in MIUI function, but it doesn't work for all applications. Here's how to do it:

1. Open Settings → Applications → Application Management.
2. Select the app you want to migrate (like Facebook or Telegram).
3. Press Warehouse.
4. If the option is available, the button Change or Move to SD-map.

🔴 Limitations of method:

• 🚫 Most system applications and games (e.g, PUBG Mobile, Call of Duty do not support portability.
• 🚫 Some apps (such as WhatsApp, Viber) block the transfer due to security.
• 🚫 After the transfer, some of the data may remain in internal memory (cache, updates).

📌 How to check which applications can be transferred?

MIUI doesn’t have a separate list of compatible apps, but you can use third-party utilities like AppMgr III (available on Google Play) that show which apps support portability, even if the option is hidden in the settings.

Make a backup copy of the application data

Check the vacant space for SD-card (minimum) 2x size)

Close the application before transfer

Reboot the phone after the transfer-->

3. Method 2: Use of SD-The card is an internal memory (adoptable storage)

This method allows for the “combination of" SD-It's a card with internal memory, and then it'll install apps automatically on the map, and it'll only work on pure Android or custom firmware, which is standard. MIUI Redmi Note 9 is disabled, but you can activate it via ADB.

🔹 Advantages:

• 🔄 Applications are installed on the map by default.
• 📱 It works for games (but it can be played with lags).

⚠️ Deficiencies:

• 🐢 Application speed may decrease (depending on class) SD-map).
• 🔒 The card is tied to the device and is not read on other gadgets.
• 🚨 When you remove the map, the applications will stop working.

🛠 Instructions for setting up through ADB:

1. Connect your phone to your PC and enable USB Debugging (Settings → About Phone → MIUI version – press 7 times, then Settings → Additional → For Developers).
2. Open the command line (Windows) or the terminal (Mac/Linux) and type:

adb shell sm list-disks

Remember the disk identifier (e.g., disk:179.64)



adb shell sm set-force-adoptable true




adb shell sm partition disk:179,64 private

After the commands are executed, the phone will offer to transfer the data to the SD-It can take 10 to 30 minutes depending on the amount of data.

Method 3: Transfer applications over ADB (no root rights)

If standard portability is not available and Adoptable Storage is not suitable, you can use ADB to force porting of individual applications.This method works on the Redmi Note 9 with MIUI 12-14, but requires a connection to a PC.

📌 Step-by-step instruction:

1. Install ADB Tools on PC (download from the Android Developers website).
2. Connect your phone and enable USB Debugging (see previous section).
3. Enter a command to check the connection:

adb devices

1. Find out the batch name of the app (for example, for Facebook it is com.facebook.katana).
2. Run the transfer command:

adb shell pm set-install-location 2


adb shell pm move-package com.facebook.katana

🔹 Transcription of teams:

• set-install location 2 – set-install location SD-map as the preferred installation location.
• move-package – transfers the specified application.

⚠️ Note: Not all applications support this method. If a Failure error occurs after a command [INSTALL_FAILED_INVALID_INSTALL_LOCATION], So transfer is impossible.

adb shell pm move-package com.facebook.katana 0

where 0 is internal memory, 2 — SD-map.-->

5. Alternative methods: what to do if nothing works

If none of these methods worked, consider alternative options:

• 🔄 Cache Clearing: Free up space in internal memory by removing the app cache (Settings) → Warehouse → Clear the cache).
• ☁️ Cloud Storage: Move photos and videos to Google Photos, Mi Cloud or Yandex Disk.
• 🎮 Lite versions of apps: Install lighter versions (e.g. Facebook Lite, Messenger Lite).
• 🔧 Ruth-Right. + Link2SD: If you are willing to take a risk, get root access and use it. Link2SD forced transfer.

📊 Comparison of methods:

💡 Gamer’s Tip: If you want to migrate the game (like Genshin Impact or Honor of Kings), it’s best to use an external game. SSD-storage OTG-Some games (such as Stardew Valley) allow you to store save files on the Internet. SD-The main data remains in the internal memory.

💡

On the Redmi Note 9 with MIUI 14, the most reliable way is to combine standard porting of lightweight applications + cleaning cache + using cloud storage for media files.

Frequent problems and their solutions

When transferring applications to SD-Redmi Note 9 users face typical errors:

• 🚫 "Transfer button is inactive: Reason: the application does not support transfer or SD-map NTFS (need exFAT).
• 🔄 "The app doesn’t update after the transfer: Return it to internal memory, update, then transfer it back.
• 🐢 "Lags after transfer to SD-Card: Wine slow card (requires a class) A2) file fragmentation.
• 📵 "SD-Card not defined": Check the slot contacts (bleed or clean with alcohol), try another card.

🔧 How to Fix the “Not Enough Space” Error When Transferring?

Sometimes the system shows this error, even if there's space on the map.

1. Reboot the phone.
2. Format. SD-card in exFAT via PC.
3. Try to migrate another app (the current one is probably blocked).

⚠️ Note: If the application stopped working after the transfer, check it:

• Availability of updates for the application in Google Play.
• Permits to access the storage (Settings → Applications → Permits).
• Compatibility SD-Cards (some Transcend or Silicon Power cards may conflict with the cards) MIUI).

FAQ: Answers to Frequent Questions