Xiaomi, Redmi and Poco smartphone owners often face the need to expand their built-in storage. A memory card remains one of the most affordable ways to increase the amount of space available for photos, music and applications. However, once installed, users often cannot find it on the system or do not understand how to access it to manage files.
In this article, we will discuss in detail the process of formatting, configuring and managing files on an external drive. You will learn how to properly open data access, transfer media and use it. SD-The card is a full part of the internal memory of the device, which will avoid errors that can lead to the loss of important information.
Before you start taking action, it is important to understand that the MIUI operating system has its own features of working with external drives. The file system must be compatible with Android, and the media itself is healthy. Incorrect extraction or formatting can make data unreadable, so follow the instructions carefully at each step.
Preparation of a memory card and installation in a slot
The first step is to physically install the media in the smartphone. Most modern Xiaomi models use a combined slot where the microSD card shares space with the second. SIM-You'll need a special paper clip to extract the tray, which usually comes with the device.
Carefully press the paper clip into the tray hole and remove it. Make sure the memory card contacts are pointing down and the cut corner matches the tray shape. Once you put the tray back in, the device must automatically recognize the new drive and issue a corresponding notification on the screen.
If the notification doesn’t show up, check the cleanliness of the contacts on the card itself and in the phone slot. Sometimes oxidation or dust interferes with normal connection. Also make sure you use a card with the volume that supports your smartphone model – older devices may not see drives larger than 32 or 64 GB.
☑️ Pre-installing check
Primary formatting through MIUI settings
After the physical installation, the system will suggest you configure the media. If the automatic window does not appear, you need to go to the settings menu manually. Find the Settings section → About the phone → Storage or immediately go to Settings → Memory, where the status of the external card will be displayed.
At this point, the system will offer two uses: as a portable storage device or as internal memory. The first option allows you to use the card to store photos, videos and documents that can be transferred to another computer. The second option turns the card into a system partition, encrypting the data so that it will be available only on this smartphone.
The formatting process will completely clear all the data on the media. If there were important files on the card, they must be copied to the computer in advance. The system will warn you about this again before starting the procedure. Press the Format button and wait for the process to be completed without turning off the smartphone screen.
⚠️ Note: After formatting as internal memory, you can’t transfer data to another phone without losing access to it. Use this mode only if you critically lack built-in space to install applications.
How to open and view files on the map
To open a memory card on Xiaomi and view its contents, the easiest way to use a standard explorer is to find the Explorer app on your desktop. SD-card.
Clicking on the map icon will give you access to the entire file structure, where folders are sorted by content type or app names, for example, photos from WhatsApp will be in the WhatsApp/Media folder, and downloads from the browser will be in the Download folder.
For deeper file management, you can use third-party file managers such as Total Commander or FX File Explorer. These provide advanced features, such as access to hidden system files or a more convenient two-panel mode for copying data.
Hidden folders on a memory card
Using the card as internal memory
The function of expanding internal memory allows you to install applications directly on the SD-This is especially true for models with a small amount of built-in storage, but it is worth considering that application speeds may be lower if a low-speed card is used.
To activate this mode, go to Settings → Memory. Select your card and click "Use as internal storage." The system will transfer some of the data and the application cache to the new medium, which can take a long time depending on the amount of information being moved.
Once activated, the card will be formatted into a file system that is not readable on a PC without special utilities.Data encryption protects your personal information, but makes the card useless when installed on another phone without re-formatting.
| Parameter | Portable storage | Internal memory. |
|---|---|---|
| Access to PC | Full access | Formatting required |
| Installation of applications | Limited. | Full support |
| Speed of operation | Depends on the card. | Could be below the built-in |
| Security | Standard. | Encryption of data |
Transfer of photos and videos to SD-map
The main reason for using external drives is to save media files. The MIUI camera allows you to set up automatic saving of new images immediately to the memory card. To do this, open the Camera app, click on three bars in the corner of the screen and select Settings.
In the settings menu, find the "Save to" switch SD-Now all the new photos and videos will take up space on the external media, freeing up precious internal space of the system, which is especially useful when shooting high-resolution video. 4K.
To transfer existing photos, use the built-in gallery or explorer tools. Select the files you want, click on the "More" button or three dots, select "Move" and specify the target folder on the SD-The process of copying large amounts of data can take several minutes.
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When transferring a large number of photos (more than 1000 pieces), it is better to do it in small portions of 100-200 files, which will prevent the conductor from freezing and reduce the load on the smartphone processor.
Possible problems and methods of solving them
It's not uncommon for users to experience a phone that stops seeing a memory card or makes an error when trying to write. Most often, the problem lies in the file system. Android works optimally with exFAT or FAT32 format. If the card was formatted in NTFS on a computer, the phone may not see it.
Another reason could be that the file table is damaged, and in this case, the system will suggest formatting the card, so if there's important data on it, try connecting it to your computer first through the card reader and running Windows or macOS error checks.
Also worth paying attention to is the card speed class: For modern Xiaomi smartphones, UHS-I or higher cards are recommended, and slow cards can cause lags in the interface if they have apps or system cache installed on them.
⚠️ Note: If your smartphone is writing regularly «SD-The card is damaged, try to wipe the contacts of the card with a smooth, often the cause of errors is oxidation of copper contacts or moisture entering the slot.
Safe extraction and maintenance
While modern versions of Android allow you to retrieve the card without first turning it off, it’s best to follow the security rules. Go to Settings → Memory, select a card, and click “Disable” or “Extract.” This ensures that all recording processes are completed.
Check the state of the drive regularly. The storage menu has a feature for analyzing the occupied space, delete unnecessary files and clean the basket if it is provided by the file manager used, which will extend the life of the memory card.
To diagnose the status of the card, you can use special applications such as SD Insight or A1 SD Bench. They will show the real speed of reading / writing and the technical condition of memory cells, which will help replace the worn media in time.
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Regular backup of data from a memory card to a computer or to the cloud is the only way to guarantee the preservation of information in the event of a sudden failure of the drive.