Searching for system directories on Xiaomi, Redmi and POCO smartphones is often a necessity for advanced users who want to make room or remove remnants of remote applications. Unlike the standard Android shell, the proprietary MIUI system has its own unique file structure that can be hidden from a standard file manager. Understanding where that data is physically located is critical for manually cleaning cache or transferring heavy files.
Many users are faced with a situation where a standard Explorer shows only a portion of the content, ignoring the root system folders, this is done by developers specifically to protect the integrity of the operating system from accidentally removing important components. However, with root rights or using special modes of connection to the PC, access to these hidden areas becomes possible and secure if you know the right way.
In this article, we will take a closer look at the file system architecture, explain the difference between visible and hidden directories, and provide secure methods for working with system files, and learn to distinguish between user data and system debris, which will help you effectively manage your device’s memory without the risk of turning your smartphone into a brick.
The standard path to user data in MIUI
By default, when connecting the smartphone to the computer through USB-The main storage, which is available for writing and reading, is on the way. /storage/emulated/0/. And that's where the folders are, like, photos, downloads, documents, and the structure. MIUI The key element is the directory. MIUI, which is at the root of this visible section.
Inside the MIUI folder, you store most of your pre-installed apps, theme settings, contacts and messages backups. For example, your favorite wallpapers and themes are on the MIUI/theme path, and backups of contacts can be found in MIUI/backup. It's important to understand that deleting the contents of this folder will reset the relevant applications, but will not affect the operating system itself.
It is worth noting that access to some subfolders inside MIUI can be restricted by Android access rights, especially on newer versions of firmware with Android 11 shell and higher.Scoped Storage security restricts application access to shared folders, which sometimes prevents file managers from displaying full content without special permissions.
⚠️ Note: Never delete the entire folder. MIUI This will result in the loss of all local settings, alarm clocks, notes and application data that are out of sync with the cloud.
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Before manually cleaning the MIUI folder, make a full backup of important data via Mi Cloud or Google Drive to avoid accidental loss of information.
Why a folder can be hidden and how to access it
A common problem users face is the inability to find system files even when connecting to a PC. This is because the standard MTP (Media Transfer Protocol) protocol used to transfer files hides system partitions and folders with a name that starts with a dot by default. In addition, newer versions of MIUI have closed access to the Android/data and Android/obb folder to third-party applications.
To display hidden files on the smartphone itself, you need to activate the appropriate option in the Explorer settings. In the standard Xiaomi Explorer app, you need to click on the menu icon (three bars) and turn on the “Show hidden files” switch.
If you want access to the root system files of Android itself (not just user data), you can’t do it by standard methods, which require obtaining Root rights or using USB debugging (ADB), without these tools, the file system will remain closed for modification, which is the main measure of protection against viruses and user errors.
What is Root Access?
Using ADB to view system partitions
The safest way to look under the hood of a system without obtaining root rights is to use tools. ADB (Android Debug Bridge: This method allows you to view files in partitions that are not accessible through regular logging. USB-File transfer mode. To start work, you need to turn on the developer mode on your smartphone and activate debugging on your smartphone. USB Settings menu → The phone. → Stalking according to version MIUI 7 times → Advanced settings → For developers.
Once you connect your smartphone to your computer and install the drivers, you can use the command line to get a list of files, and you can see the real structure of the partitions, including /data, /system, and others. But remember, direct editing files in these partitions through ADB without root permissions is often impossible — you can only copy them to your computer.
adb shell ls /data/local/tmpThis command will display the contents of the temporary system folder. To navigate the entire file system, the command cd (change directory) and ls (list) are used. For example, the transition to the folder with the system logs is carried out by the command cd. /data/log. Be careful: trying to delete a file in the system partition through ADB may require additional privileges which are normally ADB-no-session.
☑️ Preparation for work with ADB
Analysis of the structure of the MIUI folder: what can be deleted
Once you've got access, it's important to understand which files are taking up space. The MIUI folder is growing mainly through the gallery cache, the MMS messages saved, and the temporary update files. Below is a table of the main subfolders and their destinations that will help you navigate the space.
| folder | Description of the contents | Security of removal |
|---|---|---|
| MIUI/gallery/cloud_album | Cloud album cache | Safe (boots again) |
| MIUI/debug_log | Logs of system debugging | Safe (unless there is a debugging) |
| MIUI/sound_recorder | Recorder recordings | Dangerous (record removal) |
| MIUI/.cache | Hidden app cache | Conditionally safe (slows the launch) |
Special attention should be paid to the folder MIUI/debug_log. Unless you're a developer and you're debugging the system, this folder can take up several gigabytes to write back-end processes. Cleaning it often frees up a lot of memory. MIUI, root-wise DCIM), They are created every time you view the gallery.
When cleaning, follow the principle: if you don't know what the file is responsible for, you better not touch it. System logs can be useful in diagnosing crashes, and cache speeds up applications. Regular complete cache cleaning can paradoxically slow down the smartphone, as the system will have to regenerate temporary files.
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Cleaning the folder. debug_log Cloud album cache is the safest way to free up space in the section MIUI without loss of personal data.
Working with Android/data and access restrictions
Starting with Android 11, Google has imposed strict restrictions on access to the folder Android/data and Android/obb. These directories store cache and data of heavy games, offline maps of navigators and cache of messengers (for example, Telegram or WhatsApp). MIUI When you try to open these folders, it may show a message about the lack of access or just an empty directory.
This restriction is designed to protect the privacy of applications so that other programs cannot scan the contents of other applications. However, it creates inconvenience for the user when trying to transfer the cache of games to a memory card or clear the bloated cache of the messenger, you can circumvent this limitation by using file managers with support for work through the storage access API (SAF), for example, Total Commander with plugins or Files by Google.
If you use these managers, the system will request special permission, and once confirmed, you will have full access to the content of Android/data, and you will find folders with the names of packages, such as com.tencent.ig for PUBG or com.whatsapp, which are often hidden within gigabytes of temporary files.
⚠️ Attention: Delete folders inside Android/data You will lose progress in games (if there is no cloud sync) and the history of correspondence in messengers.
Hidden Partitions and the Root File System
Users with an unlocked bootloader and Root access installed (via Magisk) can access the true file system. /data is the root of user data, and /system contains the firmware files themselves MIUI. In this mode, you can find a folder. /data/data, visible Android/data, It also contains databases of system services.
Root access also shows partitions mounted as separate volumes, such as /persist, which contains sensor calibration data, and /firmware, which is microcode for communication modules, and it is strongly discouraged from interfering with these sections without a thorough knowledge of Qualcomm or MediaTek architecture, as an error can result in network signal loss or fingerprint sensor inoperability.
If you use root, file management is best suited to specialized managers such as Root Explorer or Mixplorer with root mode enabled. They automatically request superuser rights and display hidden system folders that are usually not available even through ADB without elevated-privileges.