Modern devices based on Android by default hide critical operating system directories from the user. This is done for security purposes so that accidental deletion or modification of configuration files does not lead to unstable operation of the gadget. However, advanced users, developers or enthusiasts often need access to these hidden areas to fine-tune the interface, remove system junk or modify the firmware.
The process of obtaining access rights varies depending on the version of the operating system and the model of your smartphone. Starting with Android 11, Google's security policies have tightened, restricting access even to some user folders through standard file managers. To get around these restrictions and see the root structure of the disk, you need to use specialized tools and understand the architecture of the file system.
In this article we will analyze in detail all the legal and technical ways to enter the system partition. You will learn about the risks associated with editing system files and receive step-by-step guide on using ADBroot access and specialized software. Remember that you perform any actions in the root of the system at your own peril and risk.
Android file system architecture
Before trying to open hidden directories, it is important to understand how data storage is organized. The Android file system is based on the Linux kernel and has a strict hierarchy. The root directory is indicated by the symbol / and contains many subfolders, each of which is responsible for a specific aspect of the device's operation.
The main system directories, such as /system, /data and /vendor, are mounted in read-only mode by default. This means that even if you have access, you will not be able to immediately change the contents of the files without first remounting the partition to write mode. Understanding the purpose of these folders will help you avoid fatal errors.
- 📂 /system —operating system files, standard applications and libraries are stored here.
- 📂 /data —user data, installed applications, settings and cache.
- 📂 /cache —temporary files that can be safely cleared to speed up work.
- 📂 /proc —virtual file a system containing information about processes and the kernel in real time.
Accessing these sections without proper preparation may cause the device to stop booting. The operating system carefully checks the integrity of critical files every time it starts. Violation of the directory structure often causes a cyclic reboot or a black screen.
⚠️ Attention: Never delete files from a folder
/system/libor/system/frameworkwithout understanding their exact purpose. This will make it impossible to boot the operating system.
What is SELinux and how does it affect access?
SELinux (Security-Enhanced Linux) is a security module in the Linux kernel that implements a mandatory access control policy. In modern versions of Android, it works in Enforcing mode, which blocks any unauthorized attempts to access system files, even for the root user, if the process does not have the appropriate security context.
Standard access methods without root access
For most common tasks, obtaining full access to the system root is not required. Standard Android tools provide limited but sufficient functionality for managing files in user space. Starting with Android 6.0, the built-in file manager allows you to view the contents of the internal memory and SD card.
If you need to find application logs or configuration files for specific apps, they are often located in accessible directories inside /Android/data or /Android/obb. However, in recent versions of the OS, access to these folders for third-party applications has also been limited. You can access them only through the built-in explorer or special system utilities.
Using a computer greatly expands your capabilities. By connecting your smartphone via USB in debugging mode, you can use the ADB (Android Debug Bridge) protocol to view files. This is a safe method that does not require unlocking the bootloader or gaining superuser rights. The command adb shell opens the device terminal, where you can navigate.
adb shell
ls -la /sdcard/Android/data
This approach is ideal for retrieving backups or analyzing logs without interfering with the system. You can copy files from the device to the PC and back using the command adb pull or adb push. This is the most stable way to work with the file system for ordinary users.
To enable USB debugging, go to “Settings” → “About phone” and click on “Build number” 7 times to activate the developer menu.
Obtaining root access for full access
If standard methods are not enough, the only way To gain full control over the system is to obtain root access. This is similar to administrator rights in Windows, but with a much deeper level of penetration. The rooting process varies for different manufacturers: Samsung, Xiaomi, OnePlus they have their own specific requirements.
The main tool for obtaining superuser rights in modern Android is Magisk. This utility allows you to gain root access in a system-seamless manner without directly modifying the system partition, allowing you to pass security checks in banking applications. After installing Magisk, you will be able to use file managers with root support, for example Root Explorer or Solid Explorer.
The process usually starts with unlocking the bootloader. On many devices, this results in a complete data reset (Wipe Data), so be sure to back up important information before starting the procedure. After unlocking, a modified image boot.img with embedded Magisk is flashed through the computer.
| Stage | Action | Risk of data loss |
|---|---|---|
| 1 | Activation of OEM unlocking | No |
| 2 | Unlocking the bootloader (Fastboot) | High (Full reset) |
| 3 | Installing custom recovery (TWRP) | Medium |
| 4 | Magisk firmware via recovery | Low |
After successful installation, a request to grant superuser rights will appear in file manager applications. You must confirm this request in the Magisk pop-up window. Only after this the file manager will be able to mount system partitions in write mode and allow editing of files.
Use of specialized file managers
Having root access in itself does not provide a convenient interface for working with files. For effective management, you need a high-quality file manager with support for advanced functions. Conventional explorers pre-installed in the system often do not have functions for mounting partitions or editing system files.
One of the leaders in this category is the application MT Manager. It combines the functions of a file manager and an APK editor, which makes it an indispensable tool for modding applications and the system. The app interface allows you to work with two panels simultaneously, conveniently copying and moving files between sections.
Another popular option is Solid Explorer. This application features a modern design in the Material Design style and supports working with cloud storage, FTP and SMB servers. If you have root access, it automatically requests access to protected directories and allows you to change access rights (chmod/chown) to files.
⚠️ Attention: When editing system files through the file manager, always create a backup copy of the original file before making changes. Save a copy with the .bak extension in the same folder.
In the settings of such managers you can often find the "Show hidden files" option. Enabling this option displays files whose names begin with a dot (for example, .config or .nomedia). These files often contain important app settings that are hidden from the eyes of the average user to prevent accidental deletion.
The choice of file manager depends on your tasks: Solid Explorer is suitable for simple copying, and MT Manager is needed for deep modding of the system.
Working with partitions via the terminal and ADB
For those who prefer the command command line to the graphical interface, working through the terminal provides maximum flexibility. Connecting via ADB from a computer or using a terminal emulator directly on the device (for example, Termux) allows you to perform complex scripts and batch operations.
The main difficulty when working through the console is that the system partition is locked for writing by default. To be able to change files, you must issue the remount command. The command syntax may differ depending on the device, but the general principle remains the same.
adb shellsu
mount -o rw,remount /system
After executing this command, the partition /system becomes writable. You can now use standard Linux commands such as (copy), (move), (delete) and (change permissions). Be extremely careful when entering paths, as a typo may lead to the removal of a critical component. cp (copying), mv (moving), rm (delete) and chmod (change of rights). Be extremely careful when entering paths, as a typo may result in the removal of a critical component.
To return the partition to safe mode after completion of work, it is recommended to run the remount command in read-only mode. This will prevent other processes from accidentally corrupting data. It is also useful to check the access rights to the modified files so that the system can read them correctly when loading.
Possible problems and methods for solving them
Interfering with the Android file system is often associated with technical difficulties. One of the common problems is a mounting error, when the system refuses to grant write permissions even with Root. This may be due to an enabled feature dm-verity or the SELinux security policy.
In such cases, you need to disable the boot verification integrity check. This is done by modifying the file fstab or using special Magisk modules such as "Disable Dm-Verity ForceEncrypt". Without disabling these mechanisms, any attempts to write to the system partition will be rejected by the kernel.
- 🛑 Bootloop — cyclic reboot of the device after incorrect editing of system files.
- 🛑 Loss of IMEI — Damage to the EFS or Persist partition can lead to the loss of the network identifier.
- 🛑 Certificate collection — changing system certificates can disrupt the operation of protected applications (Google Pay, Banks).
If the device stops booting, the only way out is often to enter Recovery mode and perform a factory reset (Wipe Data/Factory Reset). In more complex cases, it is necessary to flash the device via a computer using the manufacturer's official utilities, such as Odin for Samsung or SP Flash Tool for MediaTek.
⚠️ Attention: Recovery menu interfaces and item names may differ depending on the firmware version and device manufacturer. Always check the documentation for your specific model before performing a reset.
☑️ Actions before editing the system
FAQ: Frequently asked questions
Safe Is it possible to delete files from the /data/app folder?
Deleting files from this folder removes installed user applications. However, doing this manually through a file manager is not recommended, as there may be “tails” left in the registry and cache. It is better to use the standard application uninstall menu in Android settings.
Is it possible to access system folders without a computer?
Yes, it is possible. To do this, you will need to install a terminal application (for example, Termux) and obtain root access through applications like Magisk installed directly on your smartphone. However, having a computer greatly simplifies restoring the device in case of an error.
What to do if after editing the phone does not turn on?
You must try to enter Recovery mode (usually by holding down the volume and power buttons) and reset the data. If this does not help, you will need to flash the device via a PC using the manufacturer's official software.
Does access to system folders affect the warranty?
Yes, obtaining root access and unlocking the bootloader in most cases will void the manufacturer's warranty. In addition, some service centers may refuse repairs, even paid ones, if they find traces of interference in the software.
How to hide root access from banking applications?
To do this, you need to enable the "Zygisk" function in the Magisk settings and add banking applications to the exclusion list (DenyList). You may also need to install modules that hide the fact that the bootloader is unlocked.