How to Convert MicroSD to Internal Memory on Xiaomi: A Complete Guide to the Nuances

Xiaomi smartphone owners often face a shortage of internal memory, especially if the device is from a budget or medium-range. One effective solution is to use the MicroSD card as internal storage. This feature, called Adoptable Storage, allows you to combine the external drive with the main memory of the phone, which allows you to install applications, cache data and save files directly to the card. However, the process has its own peculiarities: not all Xiaomi models support this option, and the wrong actions can lead to data loss or system failures.

In this article, we will discuss how to properly convert MicroSD to internal memory on Xiaomi smartphones, including card preparation, step-by-step instructions and possible problems. Particular attention will be paid to models with MIUI 12/13/14 and Android 10/11/12/13, as the algorithm may differ depending on the firmware version, you will also learn which memory cards are better to choose for this purpose and how to avoid typical errors, such as loss of warranty when formatting a card in internal storage mode on some devices.

Xiaomi smartphones support the conversion of microSD into internal memory

Adoptable Storage is not available on all Xiaomi devices, and it depends on the Android version, MIUI shell, and hardware limitations.

• 📱 Models with Android 6.0+: In theory, all Android 6.0 Marshmallow and newer smartphones support the feature, but Xiaomi often blocks it in firmware. MIUI Chinese versions of devices (China) ROM).
• 🌍 Global and European Firmware: Global ROM and EEA ROM The option is usually available, but can be hidden in the developer settings.
• ❌ Exceptions: Some budget models (e.g. Redmi) 5A, Redmi 6) does not support Adoptable Storage even on global firmware due to manufacturer restrictions.
• ⚙️ MIUI 12 and later: In the latest shell versions, the function may be called "Internal Storage" or "Extended Memory".

⚠️ Attention: On devices with China ROM (Adoptable Storage is often disabled even when technically possible. ADB It could cause system failures.

Requirements for a memory card to convert to internal memory

Not every MicroSD is suitable for use as internal storage, and performance and reliability directly affect the speed of a smartphone, and here are the key criteria for choosing:

• 🔄 Speed class: Minimum UHS-I (U1) Or Class 10. You'd better choose for a stable job. UHS-I U3 or A2 (application-optimized).
• 📏 Volume: 32 GB (64 GB and higher recommended) Cards under 16 GB may not be convertible.
• 🏷️ Preference is given to proven manufacturers: SanDisk, Samsung EVO, Kingston Canvas - Cheap unnamed cards often cause lags.
• 🔍 Status: The card must be new or formatted. If it was previously used as a portable storage, the data will be deleted when converted.

Important: once converted, the card cannot be retrieved without losing data, it becomes "tied" to the device and encrypted, and if you pull it out and paste it into another smartphone or computer, the files will be inaccessible.

Preparation of smartphone and memory card before conversion

Before starting the process, several mandatory steps must be taken to avoid errors:

1. Back up your data from your MicroSD card and your smartphone's internal memory, and the conversion will result in a full formatting of the drive.
2. Charge the phone to at least 50%. Interrupting the process due to battery discharge can damage the file system.
3. Check the card for errors. Connect it to your computer and run the check via CHKDSK (Windows) or Disk Utility (macOS).
4. Update your firmware to the latest version of MIUI. Older versions may have bugs with Adoptable Storage.

Also make sure that the card does not have any important files on it, which will be deleted without recovery after conversion, and if the card was previously used in Portable Storage mode, you will have to format it.

Make a backup of data from the card and phone |

Charge your smartphone to 50% or higher |

Check the card for errors via PC|

Update MIUI last-minute-->

⚠️ Note: If your Xiaomi is rooted or has custom firmware (like LineageOS), the conversion process may be different. ADB corporative.

Step-by-step: how to make a MicroSD internal memory on Xiaomi

The conversion process consists of several steps. Follow the instructions carefully to avoid errors:

1. Insert the microSD card into your smartphone. Make sure it's defined by the system.
2. Open Settings → Memory. In some versions of MIUI, the path may be different: Settings → Storage → Storage settings.
3. Click on the name of your memory card (for example, SD-map: 64GB).
4. Select Settings (cog in the upper right corner) → Internal memory or Format as internal.
5. Confirm action. The system will warn you that all data will be deleted. Press Clear and format.
6. Wait until the process is complete. It can take anywhere from 5 to 30 minutes depending on the size of the map.
7. Reboot your smartphone if the system suggests it.

Once rebooted, the map will be displayed as part of the internal memory, and you can now transfer applications and files to it through the Settings menu → Apps → [Application Selection] → Storage → Change.

Frequent problems and their solutions

Even if you do the right thing, users have a problem, and let's look at the most common ones.

• ❌ Error "Cannot format the card": Most often occurs due to card incompatibility (for example, exFAT instead of the card). FAT32). Solution: format the map on PC in FAT32 and try again.
• ⚠️ Smartphone slows down after conversion: It's a slow memory card. Use only class cards A2 or U3.
• 🔄 The card is not defined as internal after rebooting: Check if it was retrieved while running. If the problem persists, reset through Settings → Additionally. → Recovery and discharge.
• 📱 Applications are not installed on the map: Some programs (for example, system) cannot be moved.

If none of these methods worked, try resetting your phone to factory settings, saving the data beforehand. In extreme cases, you may need to flash the device through the Mi Flash Tool.

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After converting the card to internal memory, check the status of the card regularly through the SD Insight app (available on Google Play), which will show the real read / write speed and will help you notice the degradation of the drive in time.

How to return MicroSD to portable storage mode

If you decide to stop using the card as internal memory, it can be returned to its original state, but this process will also lead to the complete deletion of the data.

1. Go to Settings. → Memory.
2. Click on the name of the map and select Settings → Portable storage.
3. Confirm the formatting. The system will warn you that all data will be erased.
4. Wait until the process is completed (usually takes 2-10 minutes).

You can then retrieve the card and use it on other devices, and note that if you have moved apps to it, they will stop working when you turn off the card.

⚠️ Note: On some Xiaomi models (e.g. Redmi Note 8 Pro), returning the card to portable storage mode may cause malfunctions in applications installed on it earlier.

Alternative ways to expand memory on Xiaomi

If your model doesn’t support Adoptable Storage or you don’t want to risk data, consider alternatives:

• 📁 Manual File Transfer: Use a file manager (such as Mi File Explorer) to move photos, videos, and documents to the map in Portable Storage mode.
• ☁️ Cloud Storage: Google Drive, Mi Cloud or Yandex.Disk allow you to free up space on your phone by saving files on the network.
• 🔗 OTG-Drivers: Connect the flash drive through USB OTG-Adapter: Some Xiaomi models support formatting external drives as internal memory.
• 🛠️ Replacement of built-in storage: On some devices (e.g, POCO F1) You can physically change the memory chip, but it requires disassembling the phone and soldering skills.

For applications that cannot be transferred to the map, use the Cache Cleanup function in settings (Settings → Apps → [App Select] → Storage → Clear cache) to help free up several gigabytes of space.

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Converting a MicroSD to internal memory is not a panacea. If your smartphone is slowing down after the procedure, it is better to return the card to portable storage mode and use alternative methods of expanding memory.

FAQ: Answers to Frequent Questions