How to transfer data from internal memory to SD-map M3: 5 working methods

Xiaomi Poco’s internal memory M3 Are you stuck with photos, videos or apps? The memory map is idle, and the system keeps writing, "Not enough space"? SD-The map is a logical solution, but Xiaomi smartphones often have difficulties with this task. MIUI, This article will look at all the ways that you can do things, from simply copying files to porting applications using workarounds.

Many users are faced with the fact that after insertion SD-POCO M3 The system suggests that it should be used only as a portable storage, not as an extension of internal memory, which means that most applications will still be installed in internal memory, and portability is possible only for certain types of files. MIUI 12/13 They let you get around this restriction through hidden settings or third-party utilities. M3 with different firmware - below only working solutions.

Preparation: which SD-map to pick up M3

Before transferring data, make sure your memory card is compatible with Xiaomi Poco. M3. Slot for SD-The cards in this model are hybrid - it is combined with the second slot for SIM-This means you can use either two cards. SIM-card SIM + SD-Map formats are officially supported:

• 📌 microSD (up to 512 GB)
• 📌 microSDHC (32–256 GB)
• 📌 microSDXC (up to 2 TB, but actually works up to 1 TB)

For stable operation, we recommend cards of a class not lower UHS-I (Class 10) or A1/A2 — They're optimized for small files (like app cache) and cheap, unlabeled cards can slow down data transfers or even damage files. M3 formatting doesn't work SD-Cards as internal memory through standard settings MIUI — This function is disabled by the manufacturer.

Check the card for authenticity before you buy: counterfeits often have an understated real capacity, and you can use utilities like H2testw (Windows) or SD Insight (Android) to do this. If the card is already in use, back up the data — all files will be deleted when formatted.

⚠️ Note: If you plan to transfer applications to SD-- card, avoid cards with exFAT file system. Some applications may not work properly with this system — FAT32 (but with a file size limit of 4 GB; or NTFS (Requires root rights for full support).

2. Method 1: Transfer files (photos, videos, music) through Explorer

The simplest method is to manually copy files through the standard MIUI Explorer, which requires no additional software and is suitable for transferring media files, documents and archives.

1. Open the Files app (the folder icon on the home screen).
2. Go to the Internal Memory section and find the data folders (e.g. DCIM for photos, Download for downloads).
3. Select files with a long tap, then click More → Copy.
4. Go back to the root directory, select SD-map and paste files into the desired folder.

To speed up the process, you can use batch mode: highlight all files in the folder (for example, Camera), copy them and paste them into a new folder on the back of the folder. SD-map (e.g., map, SDCard/DCIM/Camera). Note that some system folders (such as Android) may be hidden – to see them, turn on the display of hidden files in Explorer settings.

Free space on SD-card (should be larger than the size of the copied files)

Formatting a card in FAT32/NTFS (exFAT may not be supported)

No important files in the target folder (they will be overwritten)

Battery Charge (the process can take 10–30 minutes)

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If the files are not copied or there is an error "Not enough space", try:

• 🔄 Reboot your smartphone.
• 🔄 Remove and re-insert SD-map.
• 🔄 Format the card directly in the phone: Settings → Warehouse → SD-map → Format.

⚠️ Note: When copying files from the WhatsApp or Telegram folder to SD-The messengers can stop seeing the media files. To fix this, in the application settings, specify a new path to the folder on the app. SD-map.

Method 2: Automatically transfer photos and videos through the Gallery

If you want new photos and videos to be automatically saved to your home SD-This is a map, set it up in the Gallery app, and this method will eliminate the need for manual copying:

1. Open the Gallery and tap three dots in the upper right corner.
2. Select Settings → Preservation site.
3. Indicate. SD-map as the main storage for photos and videos.

After that, all the new images taken by the camera will be stored directly on the memory card.

• 📸 Old photos will not be automatically transferred – they must be copied manually (see Method 1).
• 📸 Some versions MIUI You may reset after the update – check the save path periodically.
• 📸 Apps like Instagram or Snapchat ignore these settings and store media in internal memory.

If the Save Place option is not available in your version of the Gallery, try updating the app via Google Play or use alternative cameras (such as Open Camera) where you can manually specify the save path to the Gallery. SD-map.

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To save space, turn on the camera settings option "Compress Photos." This will reduce the size of the images without severe loss of quality, and they will take up less space on the camera. SD-map.

Method 3: Transfer applications to SD-map (with limitations)

Unlike pure Android, MIUI It severely restricts the transfer of applications to SD-This is the default feature that's disabled, but you can activate it through hidden settings:

• 🚫 Not all apps support portability (especially system and cache games).
• 🚫 After the transfer, the application may run slower (depending on the speed). SD-map).
• 🚫 When you remove the map, the transferred applications will stop working.

To enable the possibility of transfer:

1. Go to Settings → Applications → Application Management.
2. Select the app you want to migrate (like Facebook or Spotify).
3. Slip on the Warehouse and find the option to Change (if not, transfer is impossible).
4. Choose. SD-map and confirm the action.

If there is no option to Change, try the following workaround:

1. Install. ADB-Drivers on PC and connect Poco M3 down USB (Turn on the debugging. USB In Settings → The phone. → Version. MIUI, tap 7 times).
2. Open the command line and type: adb shell pm set-install-location 2 This command forces the system to install applications on the SD-default-card.
3. Reboot the phone.

⚠️ Note: The pm set-install-location 2 command does not work on all versions. MIUI And it can cause some applications to crash, and once they run, they'll install new applications on the computer. SD-map, but already installed will be transferred only through manual control in the settings of each of them.

5. Method 4: Using Third-Party File Managers

Standard Conductor MIUI It is not always convenient to work with SD-Alternative file managers offer more features, such as:

• 📂 Solid Explorer – Cloud storage support and FTP, double-panel.
• 📂 FX File Explorer - built-in archiver and access to root folders (for rooted devices).
• 📂 MiXplorer - free, without advertising, with tab support.

Let’s look at the data transfer with the example of Solid Explorer:

1. Install the app from Google Play.
2. Open the side menu and select Internal Memory.
3. Find the files to transfer, highlight them and tap Copy.
4. Go back to the root directory, select SD-map and paste files.

Advantages of third-party managers:

• 🔹 Ability to create copy tasks (for example, automatically transfer new files from the Download folder to the download file). SD-map).
• 🔹 Support for network folders (SMB, WebDAV – You can copy files directly from your PC.
• 🔹 Built-in file viewer (for photos, videos, documents).

If you often work with large files (for example, video in 4K), use the “Fast transfer” function in MiXplorer – it speeds up copying by optimizing the clipboard.

Method 5: Transfer data over a PC (most reliable)

If the transfer on the phone causes errors or takes too long, plug Poco in. M3 to the computer and use the conductor Windows/macOS. This method guarantees stability and allows you to work with large amounts of data.

Step-by-step:

1. Connect your phone to your PC through USB-cable (use the original cable for stable transmission).
2. On your phone, select File Transfer (MTP) mode in the connection notification.
3. On PC, open This PC (Windows) or Finder (macOS) – there will appear the Poco M3 device.
4. Copy files from your phone folders (e.g. Internal) Storage/DCIM) folder SD-maps (usually displayed as a separate disk).

To speed up the process, you can use programs like TeraCopy (Windows) or rsync (macOS/Linux), They're multithreaded and multithreaded, and they're re-up after a cliff. SD-map:

• 🔌 Reconnect the cable.
• 🔌 Check that the card is inserted correctly into the slot.
• 🔌 Update the drivers MTP on PC (via Device Manager).

⚠️ Note: When copying large files (e.g. 10-weight video)+ GB MTP There may be a file too big error, in which case break the file into parts using an archiver (e.g., file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file file, 7-Zip) or use FTP-server on the phone (application) FTP Server from Google Play).

7. Frequent errors and their solutions

When transferring data to SD-map M3 And these are the most common problems that people have, and the ways that they can be addressed:

• 🚫 "SD-map not found": 🔹 Remove the card and clean the contacts with a dry wipe. 🔹 Check the card on another device (for example, on a PC through a card reader). 🔹 Update the phone firmware – in older versions MIUI There were card recognition bugs.
• 🚫 "There is not enough space on the map (although there is a place on the map): 🔹 The map is formatted in exFAT - reformat in FAT32. 🔹 There are too many small files on the map – delete unnecessary files or transfer them to the PC. 🔹 Check the map for errors with the help CHKDSK (Windows or fsck (Linux/macOS).
• 🚫 "The application does not work after transfer to SD-map": 🔹 Transfer the app back to internal memory. 🔹 Clear the app's cache in Settings → Annexes. 🔹 Check the application’s compatibility with external drives (some games require internal storage).

If SD-The map is determined, but the files are not copied to it, try it:

1. Disable battery optimization for Explorer (Settings → Battery → Battery Optimization).
2. Clear the data of the Storage application (Settings → Applications → All Applications → Storage).
3. Temporarily disable the antivirus (if installed) – it can block access to files.

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If SD-The card suddenly stopped being defined, don't format it right away. Try reading through the card reader on your PC -- maybe the problem is with the phone slot, not the card itself.

8.Alternative solutions: cloud storage and OTG-drives

If the transfer is SD-The card is impossible or inconvenient, consider alternative ways to free up memory:

• ☁️ Cloud storage: 🔸 Google Photos – Automatic upload of photos and videos in original quality (15 GB free). 🔸 Mi Cloud – built-in cloud from Xiaomi (5 GB free, integrated with the Internet) MIUI). 🔸 Yandex Disk or Mail.ru Cloud – 10–100 GB free for new users.
• 📁 OTG-accumulator: 🔸 Connect the flash drive through OTG-adapter (Type-C) → USB-A) and transfer files directly. 🔸 Use a portable one. SSD (for example, Samsung T7) storage of large files.
• 🔄 Clearing the cache: 🔸 B Settings → Warehouse → Clean up remove unnecessary files (cache, temporary data). 🔸 Files by Google will help you find and remove duplicate photos.

To automate uploading files to the cloud, set up sync in the appropriate applications. For example, in Google Photos:

1. Open the app and tap on the profile avatar.
2. Select Photo Settings → Backup and Synchronization.
3. Enable the option and specify the download quality (Original or High).

If you often work with large files (such as editing videos), consider buying an external file. SSD s OTG. Modern storage devices (for example, Samsung) T7 Shield supports read/write speeds of up to 1000MB/s, which is 10 times faster than most. SD-map.

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To save traffic when uploading to the cloud, enable sync only over Wi-Fi. In Google Photos, this is configured in Settings → Mobile data.

FAQ: Answers to Frequent Questions