Owners of Xiaomi, Redmi and POCO smartphones often face the need to save important data before flashing or just in case of a device breakdown. However, after creating the archive, the natural question arises: where exactly did the system put these files? Understanding the structure of the Android file system in the shell of MIUI or HyperOS is critical for those who are used to controlling their data manually.
Local copies created by the standard system tool are hidden by default in the back of the system folders, access to which can be restricted without special permissions. At the same time, cloud services offer an alternative storage path that does not take place on the internal drive, but requires a stable connection to the network.
In this article, we will look in detail at the physical paths to backup files, how to transfer them to your computer and how to restore them, learn how system archives differ from user archives, and how to properly organize data storage so that you do not lose contacts, photos and application settings at a critical time.
Local Storage: The Way to the System Folder
The main location where Xiaomiโs backup physically resides is created in the hidden partition of the deviceโs internal memory.The standard path to this directory is /MIUI/backup/AllBackup. This is where the system stores the application archives, their data, system settings, and multimedia files, if you selected the appropriate options when creating the backup.
It is important to understand that the MIUI folder is often hidden from normal viewing in standard galleries or simple file managers. To access it, you will need to use an advanced file manager, such as Google Files or Xiaomiโs built-in Explorer, enabling hidden files in the settings. Without this step, the folder may not be visible, which creates a false impression of no backup data.
The structure inside the AllBackup folder is organized by the date and time of the copy creation. yyyy-MM-dd_HH-mm-ss, It's easy to identify the right version of data, and inside those folders are files with the.bak extension for system settings and applications, and separate directories for media files.
โ ๏ธ Warning: Do not rename files with the.bak extension or change the folder structure inside AllBackup manually through your computer. Violation of checksums or naming will result in the recovery system simply โnot seeingโ the archive.
If you plan to free up space on your phone by moving these files, make sure the copy is first successfully restored to another device or saved to an external medium. Directly deleting files from that directory through the file manager is possible, but it is safer to do so through the standard cleanup menu in the phone's settings.
Cloud storage Mi Cloud and Google Drive
The alternative to local storage is synchronization with cloud services. In the Xiaomi ecosystem, the Mi Cloud is the main tool, where data is stored not as a single archive file that can be downloaded and touched, but as synchronized data streams: contacts, notes, voice recordings and photos.
For photos and videos, Google Photos or the built-in Mi Cloud gallery are used, which automatically downloads media files when you connect to Wi-Fi. The path to this data is through the browser on i.mi.com or through the account settings in the Settings โ Mi Account menu. This is the most reliable way to protect against physical loss of a smartphone.
However, itโs worth remembering the limits of free storage.Mi Cloud provides just 5GB of free space, which is quickly filled with high-resolution photos.Google Drive, in turn, can store full copies of the system, but this feature often requires root rights or use of third-party utilities, as the standard Android backup in Google One recovers mostly the list of applications and their settings, but not always the complete data inside them.
- ๐ Mi Cloud: Ideal for contacts, notes, call history and device location.
- ๐ธ Google Photos: The best solution for unlimited (compressed) or original media library storage.
- ๐ฑ Google One: Saves desktop structure, passwords, and settings for most apps.
Using the cloud ensures that even when your device is dead, you can regain access to your data by simply logging in to your new device, making cloud technology indispensable for long-term storage of critical information.
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Use the Clean Device feature in Mi Cloud settings to delete photos from your phone, leaving them in the cloud, freeing up gigabytes of space without losing data.
Backup to your computer via Mi PC Suite
For those who prefer to keep their data under full control, there is a method of creating a full copy on their personal computer. The official Mi PC Suite (or its Chinese version) allows you to create complete images of the system, in which case the answer to the question โwhere is the backup storedโ is shifted to your computerโs hard drive.
By default, the program stores data to the user folder, usually via the C:\Users\[Username]\MiPhoneBackup path or in the disk root directory if the path was manually changed during installation. Files have a specific extension and are password protected if you set it when you created the copy.
The advantage of this method is speed and volume. You don't depend on Internet speed, and the size of the archive is limited only to free space on your HDD or SSD. Also, it's the only way to make a full backup without compressing the quality of photos if cloud rates don't suit you.
But there's a big drawback: location-specific binding, so if your computer's hard drive fails, you lose both your phone and your backup, so experts recommend using the 3-2-1 rule: three copies of data, on two different media, one of which is elsewhere.
Use of external memory and OTG
Modern Xiaomi smartphones support the connection of external drives through the port USB Type-C. You can connect a flash drive or an external drive. SSD-plug-in (OTG) And you can choose them as your target storage when you create a backup, and that's a great trade-off between the speed of the local backup and the security of the external media.
When you select an external drive, the system will create a MIUI/backup folder on a memory card or flash drive. The path will look similar to the internal one, but the root directory will change to /storage/USB-drive-name/... This makes it easy to transfer archives between devices without having to connect to a PC.
It is important to consider storage formatting. To work with files larger than 4GB (if you backup video), the file system must be exFAT or NTFS. Standard FAT32 may not allow large backup files to be written, interrupting the process halfway through.
โ ๏ธ Warning: When connecting an external drive, make sure it has its own power or the phone has sufficient charge.Abrupt power outage during recording can damage the USB drive file system.
โ๏ธ Check before creating a copy on an external disk
Comparison of data storage methods
To choose the best option, you need to compare the available methods on key parameters: speed, reliability and convenience. Below is a table that will help determine the backup strategy for your use case.
| Parameter | Local (Phone memory) | Mi Cloud / Google | PC/External disc |
|---|---|---|---|
| Speed of creation | High (depends on memory) | Low (depending on the internet) | High (USB 3.0) |
| Taking up a seat on the phone | Yes (copy takes up space) | No (data in the cloud) | No (data outside) |
| Security for losing your phone | Low (data lost) | High (data retained) | High (data retained) |
| Recovery of individual files | Difficult (total backup needed) | Comfortable (selectively) | Convenient (copying) |
As you can see from the table, no method is perfect on its own. Local copy is convenient for quick rollbacks after a failed upgrade, but useless when stealing a device. Cloud is perfect for contacts and photos, but slow for large amounts of data. External drive gives full control, but requires discipline in regular connection.
The most sensible strategy is to combine methods, such as keeping contacts and photos in the cloud constantly synced, and save full system images once a month to a computer or external drive, which minimizes the risk of information loss.
Technical details of.bak files
Frequent problems and their solution
Users often face a situation where the created copy "disappears" or is not visible during recovery. One common reason is to clear the cache or use "smart" memory cleaners, which can mistake the AllBackup folder for garbage, as it takes up a lot of space. To avoid this, add the backup folder to the cleaner exceptions.
Another problem is when you change your phone settings, some users change region from China to Global or vice versa, which can lead to changes in the access paths or visibility of some system sync services. If you can't create a cloud copy, check your region settings at Settings โ Additional settings โ Region.
Also worth mentioning is the issue of Android version incompatibility. A backup made on Android 13 may not recover completely on an Android 11 device due to differences in system file structure. Always try to restore data to devices with the same or newer version of the operating system.
- ๐ Check Hidden Files: Enable the Display of Hidden Items in Explorer.
- ๐ Protective Password: Make sure you remember the password if you set it when you created the backup.
- ๐ Disk space: Make sure there is enough free space on the target medium (minimum) 10-15 GB).
Regularly checking the integrity of backups is a guarantee of peace of mind. Periodically try to recover from the archive one or two applications or photos to make sure that the process is working correctly and the files are not damaged.
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The most reliable way to store is to combine cloud synchronization for critical data and periodically create full local copies on an external medium.