How to give access to memory card on Xiaomi: all ways and solutions to errors

A microSD card is an easy way to expand Xiaomi’s smartphone memory, but many users face problems when they first connect. The system may not see the drive, prohibit file writing or offer use cases. In this article, we will discuss all the official and hidden ways to properly access the memory card on Xiaomi, Redmi and POCO devices, from basic settings to solving complex errors.

The feature of MIUI smartphones (even in the latest versions 14-15) is that they work with external drives, for example, the system can automatically mount the card as a portable storage, limiting the recording for some applications, or require formatting into internal memory, which is not always safe, and we will tell you how to circumvent these restrictions without losing data, and what settings should be changed for full operation.

Important: the instructions are relevant for all modern models – from Xiaomi 13 Ultra to the budget Redmi Note 12 and POCO X5. If your device runs on Android 13/14 with the HyperOS shell, some menu items may differ slightly – we will specify alternative paths.

1. Preparation of the memory card before connection

Before you insert a microSD into your smartphone, check it for compatibility and performance, which will eliminate most access problems.

Requirements for memory cards for Xiaomi:

• 🔹 File system format: FAT32 (up to 32 GB or exFAT (64 GB). NTFS unsupported!
• 🔹 Speed class: minimum class 10 (UHS-I) videotape 4K. For applications — A1/A2.
• 🔹 Capacity: up to 2 TB (but in practice cards up to 1 TB are stable).
• 🔹 Brand: SanDisk, Samsung are recommended EVO, Kingston Canvas – They are less likely to cause errors.

If the card has been used on another device (camera, tablet), it should be formatted, you can do it directly on your smartphone or on your PC via an adapter. Formatting on your phone via the Storage menu will automatically select the optimal file system (FAT32/exFAT), whereas on Windows, by default, you can offer NTFS, which Xiaomi does not support.

⚠️ Note: If the card was formatted as an internal memory on another smartphone, it can not be simply connected to a new device. The system will require complete erasure of data.

First Connection: Selection of Use Type

When you insert a card into Xiaomi, the system offers two options for using it:

1. Portable storage – the card works like a flash drive, files on it can be copied manually, but not all applications will be able to record data automatically.
2. Internal memory – the card becomes part of the system (partition /sdcard), applications can be installed on it, but it will not be possible to remove the drive without resetting.

Which option should I choose?

For most users, the best choice is Portable Storage. If you critically lack application space, select Internal Memory, but note:

• 📛 The card cannot be removed without a complete reset (even for transferring files to the PC).
• 🔒 Data is encrypted – after extracting it, you can not read it on another device.
• ⚡ The speed of operation depends on the class of the card: A1 social-network, A2 — play-off.

3. Set up access to the map for applications

Even if a card is defined as a portable storage, many applications (such as WhatsApp, Telegram, cameras) will not be able to write files to it without additional permissions.

Method 1: Resolution through application settings

1. Open Settings → Applications → Application Management.
2. Select the appropriate app (e.g. Gallery).
3. Go to Permits. → Warehouse.
4. Activate the switch to allow access to SD-card (if any).

Method 2: Manual indication of the saving path (for camera, messengers):

• 📷 In the Xiaomi Camera: Settings → Preservation site → Memory. → SD-map.
• 💬 On WhatsApp: Settings → Warehouse → The Road to Media → SD-map.
• 🎵 In music players (for example, Mi Music): Settings → bootloader → Choose. SD-map.

⚠️ Note: Some applications (such as Netflix or Spotify) do not support recording on external drives because of the fact that the user is not able to use the device. DRM-Attempting to get around this through ADB This can lead to a block of the account.

Storage permissions open in application settings |

The file retention path is indicated SD-map|

File system of the map — exFAT/FAT32 (not NTFS)|

The card is not encrypted as internal memory.-->

4. Solving problems with access to the memory card

If the smartphone does not see the card or makes errors ("SD-Card damaged, Not supported, try the following steps:

Mistake 1: "SD-card not supported"

• 🛠️ Check compatibility: maps NTFS or >2 TB not supported.
• 🔄 Reboot the phone with the card removed, then insert it back.
• 📱 Update. MIUI Up to the latest version - in the old firmware were bugs with exFAT.

Error 2: "Map is corrupted. Format it."

• 💾 Connect the card to your PC via a card reader and check for errors with the chkdsk (Windows) utility or Disk Utility (Mac) utility).
• 🔍 If files are critical, use Recuva (PhotoRec) before formatting.
• 🗑️ Format only via phone: Settings → Warehouse → SD-map → Format.

Error 3: Map is detected, but files are not copied

• 🔐 Check if card encryption is enabled: Settings → Lockdown and protection → Encryption SD-map.
• 📂 Make sure there is enough space on the map (minimum reserve is 10% of the volume).
• 🛑 Stop the optimizer. MIUI delete files: Settings → Battery. → Optimizing the battery → Select an application → No restrictions.

5. How to give access SD-map ADB (skilled)

If the app stubbornly refuses to see the card, you can manually issue permission to it via Android Debug Bridge (ADB), which works for most versions of MIUI, but requires a connection to a PC.

Step-by-step:

1. Turn on Developer Mode: Settings → About Phone → MIUI Version (shap 7 times)
2. Activate USB Debugging in Settings → Additional → For developers.
3. Connect your phone to your PC, install ADB drivers (for example, via Mi PC Suite).
4. Open the command line on your PC and type: adb shell sm set-force-adoptable true This unlocks the ability to use the card as internal memory even after formatting.
5. Reboot the phone and reset the map.

Teams for permit management:

• 📌 Allow recordings for a specific package (e.g. WhatsApp): adb shell pm grant com.whatsapp.android android.permission.WRITE_EXTERNAL_STORAGE
• 📌 View the list of applications with access to SD: adb shell dumpsys package | grep "SD"

⚠️ Attention: Misuse of the right ADB Don't change the settings unless you're sure they're there! For example, the sm set-force-adoptable false command will block the card from being used as internal memory.

adb shell sm list-disks

6. Alternative ways of working with SD-card

If standard methods don’t help, consider these options:

Method 1: Using the card as a USB-storage (OTG)

• 🔌 Connect the map through USB-OTG Adapter (e.g., Xiaomi Type-C to) USB).
• 📁 The system will define it as an external drive, and you can copy files without restrictions. MIUI.
• ⚡ Cons: Inconvenient for permanent use, but suitable for one-time data transfer.

Method 2: Transfer files through the cloud

• ☁️ Download files from the map to Mi Cloud, Google Drive or Yandex Disk.
• 📥 Download them back to the phone, specifying in the application settings the path to SD-map.
• 🔐 Plus: data will be reserved, minus: requires Internet and time.

Method 3: Manual mounting via Termux (for advanced)

• 📱 Install Termux from F-Droid (not from Google Play!).
• 💻 Enter the commands: pkg install termux-api termux-setup-storage ls /storage/<ID map> where <ID map> — It's like a number. 1234-5678 (You can find out by the ls command. /storage).
• 🔧 This will allow you to access files at a low level, but requires Linux knowledge.

💡

If the card is determined on a PC but not on the phone, the problem is in the slot or firmware. Try to clear the contacts of the card with alcohol or update the MIUI through Settings → System Update.

7. Safety and optimization of work SD-map

To ensure that the memory card lasts longer and does not lose data, follow these recommendations:

Operational rules:

• 🚫 Do not remove the card while recording files (for example, when shooting a video or updating applications).
• 🔋 Regularly (every 3 months) format the card directly on your phone – this prevents fragmentation.
• 🌡️ Avoid overheating: Do not leave your phone with a card in direct sunlight or near heat sources.
• 📉 Don’t fill 100% of the card – leave at least 10% free space for stable work.

How to check the health card:

• 📊 At Xiaomi: Settings → Warehouse → SD-map → State (shows the speed of reading/writing).
• 💻 On PC: use CrystalDiskMark (for speed test) or H2testw (smear-check).

Encryption of data:

If confidential files are stored on the card, turn on encryption:

1. Go to Settings. → Lockdown and protection → Encryption SD-map.
2. Set a password (other than unlocking the screen!).
3. ⚠️ After encryption, the card will not be read on other devices without resetting.

FAQ: Frequent questions about access to SD-map