How to open a memory card in a Xiaomi smartphone: step-by-step instructions

Have you inserted a microSD into a Xiaomi smartphone but the phone can't see it? Or is the card detected but the files are not available? The problem is found on models from the Redmi Note 10 to the flagship Xiaomi 14 Ultra — and the reasons can vary from improper formatting to hardware malfunctions. In this article, we will discuss all the working ways to open a memory card in Xiaomi, including hidden MIUI settings and commands for power users.

Feature of firmware MIUI — It's aggressive caching of external drives, sometimes it forgets a connected card after it's rebooted or updated, and we're going to show you how to force it to rewire. SD-The card, bypass Android's write restrictions, and what to do if the card is defined as "damaged." And if you're just planning to buy, at the end of the article, there are tips on choosing compatible memory cards for Xiaomi.

Checking the compatibility of memory card with Xiaomi

Not all microSDs are equally useful. Xiaomi smartphones support FAT32, exFAT and NTFS cards, but with nuances:

• 🔹 FAT32 — It works everywhere, but is limited to a 4GB file size (not suitable for video) 4K).
• 🔹 ExFAT – Optimal for Files >4 GB, but may not be readable on older models (Redmi) 5/6).
• 🔹 NTFS — rarely supported out of the box, requires manual mounting.

Before buying, check the specifications of your model on the official Xiaomi website, POCO X3 Pro doesn't support SDXC (map >32GB, although there is a physical slot, and flagships like Xiaomi 13T MicroSD can be used up to 1TB, but only in a hybrid slot SIM (second SIM-map).

If the card has previously worked on another device (e.g., a camera), it must be formatted before first using the smartphone, otherwise MIUI may not recognize the file system, and how to do it safely in the next section.

Formatting a memory card through Xiaomi settings

If Xiaomi sees a map but doesn’t open files or asks you to format it, follow this instruction:

1. Open Settings → Memory (or Storage in newer versions of MIUI).
2. Tap your name on it. SD-maps (e.g. SanDisk) 128GB).
3. Choose Format → Internal Memory (if you want to use it as an extension of internal memory) or Portable Storage (for normal file access).
4. Confirm action. Attention: all data on the map will be deleted!

Formatting to internal memory (Adoptable Storage) is only available on Android 9 and below. In MIUI 12+ and Android 10+, this option is hidden – it can only be enabled via ADB (more on this below).

Backup card data | Check battery power (>50%) | Close all applications using SD| Disconnect card from PC (if connected)

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⚠️ Warning: If the card doesn't open after formatting, check it on another device, it could be a hardware fault (e.g., a burnt-out controller), and only a replacement will help.

How to open a memory card through MIUI conductor

If the card is determined by the system, but the files are not displayed, the problem may be in the Explorer settings:

1. Open the standard Explorer application (or Files in MIUI 14+).
2. In the top menu, select Device or Storage.
3. Tap the section. SD-If you don't have one, click on the three dots in the top right corner and select Show Hidden Devices.
4. If the folders are empty, try updating the file list by pulling the screen down (pull-to-refresh gesture).

There's a bug in MIUI 13 and later: once you connect the card to your PC via USB-OTG, it can disappear from the conductor.

Settings → Connected Devices → Disable USB- Storage → Reboot Phone

If the card is visible but the files are not copied, check the access rights:

• 📁 Go to Settings. → Annexes → Permits → Warehouse.
• 🔧 Find the Explorer and enable permission to access SD-map.
• 🔄 Reset the conductor.

Connecting Xiaomi memory card to your computer

If the smartphone doesn't see the card, but it works on a PC, you can transfer files through the computer.

1. Connect Xiaomi to your PC via USB-cable (preferably original).
2. On your phone, select File Transfer (MTP) mode in the connection notification.
3. On PC, open This computer – the memory card should appear as a separate drive (e.g., Xiaomi SD Card (D:)).
4. Copy the files you want, then safely remove the device.

If the card is not visible on the PC:

• 🖥️ Try another one. USB-port (preferably) USB 3.0).
• 🔌 Use a card reader instead of connecting directly via your phone.
• 🛠️ Update the drivers MTP on PC (via Device Manager).

⚠️ Note: Do not remove the card from the phone while transmitting data over the phone. USB! This can damage the file system. Always use the Safe Extraction feature.

Advanced methods: ADB and hidden MIUI settings

If the standard methods didn’t work, try the ADB (Android Debug Bridge) commands, which are suitable for power users and require the developer mode to be enabled.

First, activate the debugging over USB:

1. Go to Settings → About Phone → MIUI version and tap 7 times on this item.
2. Back to Settings → Additionally. → For developers.
3. Turn on USB debugging.

Now connect your phone to your PC and execute the commands:

adb shell


sm list-disks # Show available drives (look for the line with "disk:XX,XX")




sm partition disk:XX,XX private # Replace XX,XX with your drive (e.g. disk:179.64)

This command will force the card to be stored internally, and then all the data on the card will be encrypted and not available on other devices.

sm partition disk:XX,XX public

If the card still doesn’t open, check it for errors through ADB:

adb shell


df -h # View all connected partitions




fsck_msdos /dev/block/mmcblk1p1 # Replace the path with yours (learn via df)

What to do if your memory card is damaged

If Xiaomi gives you a memory card error, don't throw it away.

1. PC Verification: Connect the card through the card reader and run the command in CMD: chkdsk D: /f (replace D: with the letter of your drive).
2. File Recovery: Use Recuva, PhotoRec, or TestDisk (free) programs that scan the map at the sector level and recover deleted files.
3. Low-level formatting: The SD Association’s SD Formatter utility completely overwrites the map, removing the bad sector.

If the card is physically damaged (for example, a broken contact), it can be repaired:

• 🔧 Carefully warm up the soldering iron contacts (only for experienced ones!).
• 🔄 Try inserting the card into another slot (e.g. a camera).
• 🛠️ Contact the service center – sometimes it helps to replace the controller.

⚠️ Warning: Do not use the post-restore card for important data! Damaged memory cells can cause file loss in the future.

How to choose a memory card for Xiaomi: tips 2026

Not all microSDs are equally reliable, and Xiaomi recommends cards with the following characteristics:

Avoid nouneim brand cards (e.g. NoName, Generic) – they often have understated real capacity and slow speed. Check the card after buying the H2testw utility (it will show real volume).

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Before buying, check if your Xiaomi model supports memory cards.For example, the Xiaomi 12S Ultra does not have a microSD slot, and in the POCO F5, the card only works in a hybrid slot (instead of a second SIM).

FAQ: Frequent questions about memory cards in Xiaomi