How to turn SD-Map in internal memory on Xiaomi: a complete guide with nuances

Why Xiaomi Owners Choose Why SD-map as an internal memory?

Xiaomi smartphones even in the top lines (Redmi Note 12 Pro+, POCO F5, Xiaomi 13T) often suffer from a lack of internal memory. 128 GB on paper seems to be enough, but after installing system files, cache and 3-5 modern games (Genshin Impact, Call of Duty Mobile) free space remains critically small. The solution is to use microSD as an internal drive, but there are underwater rocks.

Unlike brands like Samsung or Huawei, where Adoptable Storage is stable, Xiaomi has limitations. MIUI 14+ Android 13+ formatting SD-It's encrypted as internal memory, and when it's extracted, it's not available on other devices, and it's not a bug, it's a feature of Google protection, and we'll figure out how to get around the restrictions and what to do if the system refuses to see the map.

Which Xiaomi models support the feature?

Not all Xiaomi smartphones allow you to use them. SD-This is the key to interoperability:

• 📱 Android version: from 6.0 (Marshmallow and higher. MIUI 12/13/14 The function works, but with nuances.
• 🔧 Type of slot: hybrid slot only (combined with a SIM) Devices with eMMC 5.1 and later support Adoptable Storage better.
• ⚠️ Exceptions: Xiaomi flagships 12/13 Ultra, Black Shark and some models POCO (for example, POCO X5 Pro) may block the function due to performance optimization.

🔍 How do you check compatibility? Go to Settings → Memory. → Additionally, if there's a Format as internal, your device supports the function. If not, read the circumvention section.

Preparation SD-maps: class, format and brands

Not every microSD is suitable for internal memory, but here are the critical requirements:

• 💾 Speed class: minimum UHS-I (U1) Class 10, for games and 4K-video — A2 (for example, Samsung EVO Plus A2, SanDisk Extreme A2).
• 📏 Volume: from 32 GB to 2 TB. Optimally - 128-256 GB. Cards for 4-16 GB will work slowly.
• 🔄 Format: exFAT or FAT32 (But after formatting as internal memory, the system will translate it into ext4 or f2fs).

⚠️ Note: No-name brand maps (e.g. Transcend without labeling) A1/A2) Can cause lags and errors "SD-Check reviews on AliExpress or Amazon before buying - look for mentions of working in Adoptable Storage mode.

🛠️ How to check card speed? Install the application A1 SD Bench (free on Google Play) Minimum metrics for comfortable work:

• 📊 Reading: ≥ 80 MB/s
• 📝 Recording: ≥ 30 MB/s
• 🔄 IOPS (4K): ≥ 1000

💡

Before the purchase SD-Check it for counterfeit with the help of the utility H2testw (Windows or F3 (Linux/macOS). Fake cards often show an oversized volume, but in fact they have everything. 4–8 GB memory.

Step-by-step instructions: how to do SD-memory-card

The process differs depending on the version of MIUI and Android, below is the universal algorithm for most Xiaomi devices (relevant to MIUI 12-14 and Android 10-13).

Make a backup copy of the data with SD-map|Charge the phone. ≥50%|Connect to a stable Wi-Fi|Make sure the card is formatted as portable.-->

1. Put it in. SD-If you use a hybrid slot, select priority for the memory card (in the Settings menu). → SIM-maps and mobile networks → Additional settings).
2. Go to Settings. → Stick by your name. SD-maps (e.g. SanDisk) 128GB).
3. In the upper right corner, press three dots (⋮) and select Memory Settings (or Format as Internal).
4. The system will warn you that all data will be erased. Click Clear and Format → Format as internal.
5. Wait until it's finished (it can take 5-15 minutes).

⚠️ What if you don't have "form as internal:

• 🔄 Update MIUI last-minute.
• 🔧 Use it. ADB-command (instructions in the next section).
• 📱 Reset the settings to factory (pre-make a backup!).

💡

After formatting SD-The card will be encrypted. It will not be read on another device without losing data!

Alternative method: formatting through ADB

If the standard method doesn’t work, Android Debug Bridge (ADB) is a good method for power users and requires a computer.

📌 What's the matter:

• 🖥️ Computer with Windows/macOS/Linux.
• 🔌 Cable USB Type-C (original!).
• 🛠️ Utilities: ADB Tools and drivers for Xiaomi.

🔧 Instructions:

1. Turn on the phone Developer Mode: go to Settings → About phone and 7 times tap on the MIUI version.
2. Return to Settings → Additional → For developers and activate Debugging over USB.
3. Connect your phone to your PC, open the command prompt (cmd) and type: adb devices If the device is displayed, type: adb shell sm list-disks Remember the disk ID (e.g., disk:179.64).
4. Format the card with the command (replace X with your ID): adb shell sm partition disk:X private

⚠️ If after the command the phone stopped seeing SD-Reload it to Recovery Mode (press the Power) + Volume Up and select Wipe → Format Data. It'll reset all the settings!

Transfer of data to SD-map

Once formatted successfully, the system will suggest transferring the data to the new internal memory, but there are some nuances:

• 📁 What can be transferred: photos, videos, music, documents, some app caches.
• ❌ What NOT to transfer: system files, application data (WhatsApp, Telegram), online-authorized games (PUBG Mobile, Free Fire).
• ⚡ Speed of operation: applications installed on SD-The card will start 20-40% slower than in the internal memory.

🔄 How to Move Applications?

1. Go to Settings → Applications → Application Management.
2. Select the desired application (such as Spotify) and tap Storage.
3. Click Change and select SD-map.
4. Confirm the transfer. Some apps (like Google Play Services) don't support this feature.

📊 Compatibility table of applications with SD-card:

Common Problems and Their Solutions

Even after successful formatting, Xiaomi users are faced with errors.-5 problems and ways to correct them:

• 🚫 "SD-Card damaged": "Cause: incompatible format or formatting failure.Solution: format the card on PC in the computer FAT32 (use SD Formatter, then repeat the procedure on your phone.
• 🐢 Slow work: Reason: Class map U1 Solution: buy a card. A2 (For example, Samsung Pro Endurance).
• 🔄 Phone doesn't see card after reboot: Reason: mount failure. Solution: Go to Settings → Memory. → SD-map → Mount.
• 📱 Applications fly out: Reason: transfer system files. Solution: move back to internal memory or reinstall the application.
• 🔒 Unblock requests when connecting to a PC: Reason: Encryption MIUI. Solution: Connect the phone in file transfer mode (MTP) and enter the screen lock password.

🛠️ Extreme method: If the card is no longer defined at all, try:

1. Remove it and put it back in.
2. Make sure to clean your contacts (no jokes, it helps!).
3. Check in Recovery Mode (press Power + Volume Up when you turn on).

FAQ: Answers to Frequent Questions