How to transfer files to a memory card in a Xiaomi phone: all ways + error solving

Owners of Xiaomi smartphones sooner or later face a lack of internal memory — especially if the device is budget (Redmi Note or Poco M series) or is used actively for shooting video in 4K/8K. The microSD card solves the problem, but not everyone knows how to use it correctly. In this article, 5 proven ways to transfer data, including hidden MIUI functions, as well as analyzing typical errors like “Inadequate rights” or “Read-only map”.

We'll look at not only standard methods through Explorer, but also advanced options: porting applications (yes, it's possible!), automatically saving photos to SD, and working with files through ADB for power users. A separate block is devoted to card compatibility - why Xiaomi does not see exFAT drives and how to fix it.

If you’ve just bought a memory card, check it for authenticity first – SanDisk or Samsung fakes are often sold with understated real capacity. Use h2testw (Windows) or F3 (Linux/Mac) utility for this. Xiaomi has better A2 (for apps) and U3/V30 (for 4K video).

⚠️ Important: Before transferring data, make a backup! When formatting a card in your phone, all files on it will be erased. Also note that some applications (such as WhatsApp or Telegram) do not support external drives - their cache and media files will remain in internal memory.

1. Memory card preparation: formatting and file system selection

Before you use it, you have to format it right in your phone — even if you did it on a PC. The thing is, MIUI is optimized to work with the FAT32 or exFAT file system, but by default offers FAT32 (with a 4GB file size limit). If you shoot 4K@60fps video, choose exFAT.

How to format a map in Xiaomi:

1. Insert the card into the slot (or an adapter for models without a separate slot, such as the Xiaomi 12T).
2. Go to Settings → Memory → Memory Map.
3. Click Format → Format as internal (if you want to use the card as a memory extension) or Format as portable (if you move it between devices).
4. Select File System: FAT32 is compatible with all devices, but file limit >4 GB. exFAT is not a file size limit, but some older devices (like Redmi 4A) don’t support it.

⚠️ Warning: If you select "Format as internal", the card will be encrypted and attached to the phone. Once removed, it will not be read on another device without resetting! This mode is only suitable if you constantly use the card in one smartphone.

2. Method 1: Transfer files through standard MIUI Explorer

The easiest method is to use the built-in Explorer (or Files in newer versions of MIUI 14/15) to move photos, videos, music and documents without any additional applications.

Step-by-step:

1. Open the Files app (the folder icon on the home screen).
2. Go to Categories → Images (or Videos, Audio, etc.).
3. Select files with a long press, then tap the icon "More" (three dots) → Move.
4. At the top of the screen, select Memory Map and specify the destination folder (e.g., DCIM/Camera for photo).
5. Confirm the transfer button Move here.

🔹 Tip: To speed up the process, use the "Sort by Date" function (the filter button in the upper right corner), so you can highlight all the photos from the last month and transfer them at a time.

Memory card formatted in phone (not on PC)

There is enough free space on the map (at least 10% more than the weight of files)

Files are not used by other applications (for example, music is not played)

Phone connected to charging (for large amounts of data)

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Method 2: Automatically save photos and videos to a memory card

If you don’t want to manually move media files every time, set up the camera to save directly to the SD. This is true for models with microSD support in the main slot (for example, the Redmi Note 12 Pro+ or Poco X5 Pro).

How to include saving on the map:

1. Open the Camera app.
2. Slip on the icon "Settings" (cogs) → Save the place.
3. Select Memory Card.
4. For 4K or 8K video, you may need to select High Speed Card (if the phone supports UHS-I).

⚠️ Note: if you are shooting in a format RAW (For example, on Xiaomi 13 Ultra, the card must maintain a write speed of at least 90 MB / s. Otherwise, the camera will give an error "Slow memory card". SD manufacturer's website.

Method 3: Transfer applications to a memory card (only for MIUI 12+)

Careful: this method does not work on all Xiaomi models! Starting with MIUI 12, some applications can be ported to SD, but with limitations: only those that support the Adoptable Storage function (when formatting the card as internal memory), and this is possible for applications installed through APK, but not for system applications (for example, Google Play Services).

Instructions:

1. Format the card as an internal memory (see Section 1).
2. Go to Settings → Applications → Application Management.
3. Select an app (like Spotify or VLC).
4. Slip the vault. → Change. → Memory map.
5. Wait for the transfer to be completed (it can take up to 5 minutes).

🔹 Limitations:

• 🚫 You can not transfer system applications (Mi Home, Security, etc.).
• 🚫 Ported application widgets may not work.
• 🚫 After the map is removed, the applications will stop running.

5. Method 4: Transfer files over a PC (for large amounts of data)

If you need to move tens of gigabytes (like a backup or movie collection), it's easier to use a computer, faster than using MIUI, and avoids errors when copying large files.

What you need:

• 🖥️ Computer with Windows/macOS/Linux.
• 🔌 USB-Type C Cable (preferably original from Xiaomi).
• 💾 Cardholder (if the microSD slot on the phone is occupied by the second one) SIM-card).

Step-by-step:

1. Connect your phone to your PC in File Transfer (MTP) mode (when you see a request on your smartphone screen, select this option).
2. Open This Computer (Windows) or Finder (Mac) – there will be two drives: internal memory and SD card.
3. Copy files from the internal memory (Internal Storage folder) to the card (SD Card).
4. Use an archiver (like 7-Zip) to speed up: pack the file folder into.zip, transfer the archive to SD, and then unpack directly into your phone via RAR or ZArchiver.

⚠️ Note: if you are copying large files (>4 GB) The error "File is too big for the end file system" appears, so the map is formatted in the file system. FAT32. Reformat it to exFAT via phone (see section 1) or using the utility SD Formatter on PC.

1. Reconnect the cable (use the USB 3.0 port on your PC).

2. Enable “USB Debugging” in Settings → About Phone → MIUI Version (tap 7 times on version, then return to Additional → For Developers).

3. Install Mi PC Suite drivers from the official Xiaomi website.

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Method 5: Transfer files over ADB (for power users)

If standard methods don't work (e.g., the phone doesn't see the card or gives you an "Inadequate Rights" error), you can use ADB, a debugging tool for Android, which is true for rooted devices or models with custom firmware.

What needs to be done:

1. Install Platform Tools (download from the Android Developers website and unpack to the root of the C:\ drive).
2. Enable USB debugging on your phone (see the tip in the previous section).
3. Connect your phone to your PC and open the Command Prompt in the ADB folder.
4. Follow the commands: adb shell sm list-volumes Find the output path to the memory card (for example, /mnt/media_rw/1234-5678).
5. Copy files with the command: adb pull /sdcard/DCIM/Camera/ C:\Backup\Photos adb push C:\Backup\Photos /mnt/media_rw/1234-5678/DCIM/Camera/

🔹 Advantages of the method:

• ⚡ It works even if the card is not displayed in MIUI.
• 🛡️ Allows you to bypass the limitations of the file system.
• 🔧 It can be automated through scripts (for example, for regular backup).

💡

Use ADB only if you are confident in your actions! Incorrect commands can lead to data loss or system failure.

7.Typical errors and their solution

When working with memory cards in Xiaomi, users often face the following problems:

🔹 Data recovery tip: if the card is no longer defined, don't format it right away! Try scanning through PhotoRec (free utility) or DiskDigger (for Android.

8. Optimization of work with a memory card: tips for advanced

To make the memory card last longer and work faster:

• 🔄 Clean the cache regularly: go to Settings → Memory. → Memory map → Clean up.
• 📁 Use folders: Don’t store all files at the root of the card – create a structure (e.g., structure, Photos/2026, Music/Rock).
• 🔋 Remove correctly: Before taking out the card, tap "Safe Removal" in the notification curtain.
• 🔄 Defragment: once in a while 3 Connect the card to the PC and start defragmentation (only for a month) FAT32/exFAT!).

🔹 For gamers, if you play Genshin Impact or Call of Duty Mobile, transfer only the game's cache to the map, and leave the main files in internal memory.

💡

Class A1/A2 memory cards are optimized for applications, but their speed drops by more than 80% when filled.

FAQ: Frequent questions about working with memory cards in Xiaomi