Flash drive as a Xiaomi phone memory: how to connect and expand storage

Xiaomi smartphones, even in top configurations, often suffer from a lack of internal memory – especially if you actively shoot videos in the video. 4K, You set up heavy games or you keep large collections of music. NAND-The difference in price between the 128 GB and 256 GB versions can reach 30-50%.The solution is to use the flash drive as internal memory of the phone through Adoptable Storage technology, available on all Xiaomi versions with Android 6.0 and newer.

In this article, we will discuss not only the standard method of connecting through the OTG-Adapter, but also little-known nuances: how to choose the right flash drive for permanent use, why some Xiaomi models (for example, Redmi Note 10 Pro or other devices). POCO X3 Pro) may not “see” the drive and how to circumvent the restrictions MIUI You'll also learn about the risks to data from this memory extension method and how to minimize them.

What flash drives are suitable for use as internal memory Xiaomi

Not every flash drive is capable of running in Adoptable Storage (when the system perceives it as part of the built-in storage), here are the key requirements:

• 🔹 Write/read speed: minimum UHS-I Class 10 (10 MB/s) for smooth application performance, you should choose UHS-II or U3 (30+ On slow flash drives (Class 4), applications will slow down or not be installed at all.
• 🔹 Volume: from 32 GB to 1 TB. Optimal - 128-256 GB. Flash drives less than 32 GB system may not allow formatting as internal memory.
• 🔹 Form factor: microSD (for slots) or USB Type-C/OTG (For external connectivity, Xiaomi 12/13 series and flagships POCO The memory card slot is often missing – you will have to use it. OTG.
• 🔹 Manufacturer: avoid no-name flash drives. Best options are SanDisk Extreme, Samsung EVO Plus, Kingston Canvas Go! A1/A2 (optimized for applications).

⚠️ Note: Flash drives with exFAT file system or NTFS Before using Xiaomi, you need to reformat it. FAT32 (If you plan to use it as a removable drive, or leave the formatting to the system (if as internal memory). 9A) Do not support exFAT out of the box".

Differences: removable drive vs internal memory

In MIUI, when connecting a flash drive via OTG or microSD slot, the system offers two use cases:

💡 When choosing internal memory:

• 📱 You need to install a lot of applications, but the built-in memory is not enough.
• 🎮 Play heavy games (Genshin Impact, Call of Duty Mobile) that take 10+ GB.
• 📷 Keep large media files (video in the video) 4K, RAW-Photos) and you want them to be indexed by the gallery as local.

⚠️ Note: If you use the flash drive as internal memory, you can't just take it out, the system will perceive this as disk damage. → Warehouse → [The name of the flash drive] → Extract.

Step-by-step: how to connect a flash drive as internal memory

The process is different depending on whether your Xiaomi has a microSD slot or whether you are using it. OTG-So let's look at both.

Method 1: Through a microSD slot (for the Redmi Note, POCO M/X series)

1. Insert the flash drive into the slot (pre-formatted in FAT32 if it is new).
2. When the notification "New disk" appears, click Configure.
3. Choose to use it as an internal memory.
4. Confirm the formatting (all data will be erased!).
5. Wait for the process to be completed (it can take 5-15 minutes depending on the volume).
6. Reboot the phone.

Method 2: Through OTG-Adapter (for flagships without a slot)

This method will require:

• 🔌 OTG-adapter (better with own power, if the flash drive is energy intensive).
• 💾 Flash drive. USB Type-C or conventional USB-A adapter.

Enable OTG in settings (Settings → Connected Devices → OTG)

Format the flash drive in FAT32 (if it is new)

Connect the adapter to the phone before inserting the flash drive

Use the original Xiaomi cable for stable power-->

1. Connect. OTG-phone adapter.
2. Put the flash drive in the adapter.
3. In the notification, select Setup → Use as internal memory.
4. Follow the system instructions (formatting + encryption).
5. Once completed, don’t remove the flash drive – it’s now part of the system!

💡

If the phone doesn’t see the flash drive through OTG, try plugging it into a PC and formatting it into FAT32 with a cluster size of 32 KB. This solves the compatibility problem 80% of the time.

Problems and solutions: why Xiaomi does not see the flash drive or does not allow you to format

Even with the right connection, Xiaomi users often encounter errors. Let’s look at the typical cases and how to solve them.

Error: "Disk damaged. Format it."

Reasons:

• 🔄 The flash drive is formatted in NTFS/exFAT (need FAT32).
• 🛠️ Damaged sectors (check on PC via chkdsk).
• 🔌 Unstable nutrition (relevant to the OTG externally).

Decision:

1. Format the flash drive on your PC in FAT32 (use the SD Formatter utility for microSD cards).
2. If the error remains, check the flash drive for broken sectors (CrystalDiskInfo).
3. For OTG, use an externally powered adapter (such as a USB-hub with a charging connector).

Error: “I failed to format as internal memory”

This problem is more common on MIUI 12-14 due to manufacturer restrictions.

• 📵 The flash drive is too slow (class below) UHS-I).
• 🔐 In the developer settings, OEM unlocking is disabled.
• 📱 Phone with Android Go (stripped version of OS).

The flash drive connects, but applications are not installed

If you have successfully formatted the flash drive as internal memory, but the applications are still installed in the built-in storage:

1. Go to Settings → Applications → [Select App] → Storage.
2. Click Change and select the flash drive.
3. If the option is inactive, check if there is enough space on the flash drive (at least 10% of free space is needed).

💡

On some Xiaomi models (e.g. Redmi 9T), even after formatting as internal memory, the system can ignore the flash drive to install applications, in which case only manual transfer through ADB or using applications like AppMgr III will help.

How to transfer data and applications to a flash drive after connecting

Once the flash drive has become part of the internal memory, you need to distribute the data correctly.

• 📱 Applications: through Settings → Annexes → [Annex] → Warehouse → Change.
• 📷 Photo/video: in camera settings (Storage) → Memory of the device → SD-map).
• 🎵 Music and documents: manually through any file manager (e.g. Mi File Manager).
• 🎮 Cash games: in the game settings (for example, in the PUBG Mobile or Free Fire can be selected for downloads).

⚠️ Note: Not all applications can be migrated to a flash drive, such as system utilities (MIUI Security, Google Play Services, will remain in the internal memory, and some games (such as Genshin Impact) may fail to work with an external drive due to cheating protection.

💡

To speed up data transfer, connect your phone to your PC via USB (in file transfer mode) and copy folders manually, faster than moving through the file manager on your phone.

Risks and disadvantages of using a flash drive as internal memory

Despite the convenience, this method has serious disadvantages:

• ⚡ Speed of operation: even the fastest microSD UHS-II into 3–5 time-slower than the built-in memory UFS 2.1/3.0. This is critical for gaming and multitasking.
• 🔋 Increased battery consumption: Constant work with external storage increases power consumption by 5-15%.
• 🚨 Data loss risk: If you remove the flash drive without "disabling" or system failure, the files will be damaged.
• 📉 Flash drive life: When used intensively (especially for applications), memory cells wear out faster than in internal memory.

Alternative ways to expand memory on Xiaomi

If using a flash drive as internal memory seems risky or uncomfortable, consider alternatives:

• ☁️ Cloud storage: 🔹 Mi Cloud (5GB free, integrated with MIUI). 🔹 Google Drive (15GB free, convenient for backups). 🔹 Yandex Disk (10GB free, fast download in Russia).
• 📱 Optimization of internal memory: 🔹 Remove the application cache (Settings) → Warehouse → Clear the cache). 🔹 Move your media files to the archive (for example, using Google Photos with the “Free Place” function"). 🔹 Use the "Lite" versions of applications (Facebook Lite, Messenger Lite).
• 🔄 Network connection: 🔹 FTP-server on a PC (via FileZilla or via FileZilla) ES Conductor). 🔹 Samba-ball (if there is a router at home with a USB-port).

💡

Cloud storage is the safest way to expand memory, but it requires a stable Internet connection. For offline file access, it is better to combine a flash drive (for media) and a cloud (for backups).

FAQ: Frequent questions about the flash drive as Xiaomi memory