How to allow access SD-Map on Xiaomi: a step-by-step guide

Xiaomi smartphone owners often face a problem when the system is in place. MIUI Blocks access to files on SD-The card, whether it's not possible to write, read, or even mount the drive, can be caused by security settings, file system errors, or firmware features. In this article, we will break down all the current ways to unlock a memory card on Xiaomi in 2026, including the hidden settings of the developer and teams. ADB.

It is important to understand that the restrictions on working with SD-card MIUI They're not random, they're designed to protect user data from unauthorized access, but sometimes these measures become redundant, like when you're trying to move apps to a map or write files through a file manager. MIUI (12 to 14, and specific models, from the Redmi Note 10 to the Xiaomi 13 Ultra.

Why Xiaomi is blocking access to the SD-map?

MicroSD access issues on Xiaomi are usually due to one of five reasons:

• 🔒 Security policy MIUI: By default, the system limits the recording to external drives for third-party applications.
• 🛠️ File system errors: The map can be formatted into NTFS or exFAT, which is not always supported correctly by Android.
• 📱 Settings for developers: Disabled options in the menu For developers can block mounting.
• 🔄 Firmware conflict: After update MIUI Sometimes the access rights to the storage devices are reset.
• 💾 Physical damage: If the card is damaged, the system can block it to prevent data loss.

For example, MIUI 14 adds a Privacy Protection feature that by default prevents applications from accessing external drives without explicit permission, even for standard file managers, and in older versions (before MIUI 12.5), the problem often arose from a bug with mounting cards larger than 128 GB.

Method 1: Allow access through MIUI settings

The easiest method is to configure access rights directly in the system interface, which works on all devices with MIUI 12-14 and does not require root rights.

1. Open Settings → Applications → Application Management.
2. Click on the three dots in the top right corner and select Special Access.
3. Go to Access All Files (or Manage All Files in New Versions).
4. Find in the list the application that needs to be allowed to work with SD-Map (such as Files, Gallery or Google Photos) and activate the switch.

If the desired app is not on the list, try the following path:

1. Go to Settings → Memory.
2. Put yours on. SD-map (it should be displayed as an external drive).
3. Select Settings (cog icon) → Format as internal memory (if needed) or Allow access.

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If you don't find the card after that, try physically removing it and re-inserting it, sometimes rebooting the phone with the phone taken out helps. SD-card.

Method 2: Formatting SD-maps as internal memory

If you want to use a memory card as part of your primary storage (for example, for app installation), you need to format it as internal memory. Note that you can't read it on other devices without formatting it!

Instructions:

1. Go to Settings. → Memory. → SD-map.
2. Click on the three dots in the top right corner and select Storage Settings.
3. Tap format as internal → erase and format.
4. Wait until the process is completed (it can take up to 10 minutes).

⚠️ Note: Once formatted as internal memory, the card will be encrypted, it will not be used on other phones or computers without data loss, and some applications (such as WhatsApp) may not work properly with this type of storage.

Method 3: Use ADB to unlock (no root)

If standard methods do not help, you can use Android Debug Bridge (ADB) – a debugging tool that allows you to change system settings without superuser rights.

Step-by-step:

1. Turn on Developer Mode: Go to Settings → About Phone. tap on MIUI Version 7 times.

USB debugging

For developers

ADB-driver

Open the command line (Windows) or terminal (macOS/Linux) and type:

adb shell sm set-force-adoptable true

This team unlocks formatting capability SD-cards as internal memory, even if the option was hidden in the settings. After you do, restart your phone and try formatting again through Settings → Memory.

⚠️ Attention: Teams ADB If you enter the system incorrectly, do not use this method unless you are sure of your actions.

Install drivers ADB PC-only|Enable the developer mode on Xiaomi|Activate debugging by USB|Connect your phone to the original cable|Check the detection of the device by the team `adb devices`-->

Method 4: Verification and correction of file system errors

If SD-The card is identified but not opened or makes errors (e.g, "SD-The card is corrupted. "" The problem may be in the file system.

Instructions for Windows:

1. Connect the card to the computer through the card reader.
2. Open this computer, find yours. SD-map, right-click and select Properties.
3. Go to the Service tab → Check it out.
4. Mark both checkboxes (Automatically fix system errors and Check and repair damaged sectors) and click Start.

For macOS/Linux, use the command in the terminal:

diskutil verifyDisk /dev/disk2

(Replace disk2 with your disk, you can specify by the diskutil list command).

If the check didn't work, try formatting the card in FAT32 with the SD Formatter utility (the official tool from the SD Association).

Method 5: Change settings through system file editor (for advanced)

This method is suitable for users with root rights or custom firmware (for example, LineageOS), which allows you to manually edit the system files responsible for mounting. SD-map.

What needs to be done:

1. Install a file manager with root support (such as Root Explorer or Solid Explorer).
2. Go to /system/etc/permissions.
3. Find the platform.xml file and open it in the text editor.
4. Add or change the following lines:

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On devices with MIUI 14 and later, be sure to check the permissions for each application separately - global access to the app. SD-no longer!

Frequent errors and their correction

Let’s look at the common error messages and how to fix them:

If none of the methods worked, try resetting your phone to factory settings (be sure to back it up!). 90% of the time, it resolves software conflicts with the phone. SD-map.

FAQ: Answers to popular questions