Games on external memory: how to transfer and run via a flash drive

Modern mobile games take up gigabytes of free space, which often leads to the built-in storage of a smartphone becoming full. Owners of devices with small amounts of memory are faced with the need to free up space or look for alternative ways to install software. Using an external flash drive via an adapter OTG or a memory card microSD becomes an effective solution to this problem.

The process of transferring game files to external media requires an understanding of the directory structure Android and the features of the file system. Simply copying folders often does not work, since the security system of modern versions Android restricts application access to external drives. It is necessary to strictly follow the algorithm of actions so that the game correctly recognizes the data and starts without errors.

In this article we will analyze the technical nuances of connecting drives, setting access rights and manually moving the cache. You will learn which file managers have the necessary functionality and how to bypass system restrictions without obtaining root access. This information will be especially useful for users who want to expand the capabilities of their gadget.

Preparing equipment and selecting a drive

The first step is to select a suitable external media. To connect to a smartphone, you will need a memory card of format microSD or a standard USB flash drive with an interface USB 3.0 or higher to ensure high data reading speed. If you are using a regular flash drive, be sure to check for an adapter OTGthat converts the connector USB-A to USB-C or Micro-USB.

Pay attention to the file system of the drive. Most devices based on Android work correctly with FAT32 i exFATformats. The format NTFS may not be supported without installing additional software or special firmware. Before starting work, it is recommended to format the flash drive on your computer by selecting the optimal file system.

Make sure that your smartphone supports the function USB Host. This technology allows the mobile device to act as the main controller for connecting peripherals. You can check support in the technical specifications of the model or using specialized applications, such as USB OTG Checker.

⚠️ Attention! Using low-quality adapters OTG can lead to unstable operation of the charging port or overheating of the smartphone's power controller. Choose accessories from trusted manufacturers.

Setting up the file system and access rights

After physically connecting the drive, the system should detect a new device. A message indicating that the USB storage device is connected will appear in the notification shade. To work with game files, it is critical to provide the file manager with special access rights to directories on an external card.

Standard explorers often do not have full access to folders Android/data and Android/obb on external media in versions Android 11 and newer. You will need an advanced file manager, for example Total Commander, Solid Explorer or X-plore. The first time you try to access system folders on a flash drive, the system will ask for permission.

In the system window that appears, you must click the “Use this folder” button and confirm the action by clicking “Allow”. This action delegates permissions to the application to read and write files in the specified directory. Without this step, copied games will not be able to create the necessary logs or save progress.

• 📂 Connect the flash drive and wait for the notification about mounting the drive.
• 🔐 Open the file manager and go to the root of the external memory.
• ✅ When prompted by the system, confirm access to folder Android on external media.
• 💾 Make sure that folders are created on the flash drive data and obb inside the directory Android.

Search and download game installation files

To install the game on external media, you will need two types of files: an installation package APK and an archive with the game cache. The APK file contains the executable code of the application, and the cache contains graphic resources, sounds and levels, which occupy the main amount of memory.

You can download the necessary files from trusted sources, such as the official store Google Play (with subsequent extraction), specialized portals like 4PDA or Trashbox. When downloading, pay attention to the version of the game and compliance with the processor architecture of your smartphone (arm64-v8a, armeabi-v7a).

Some games are distributed in the format XAPK or APKM, which combine the installer and cache into one archive. To work with such files, you will need a special installer, for example, XAPK Installer. However, for manual transfer to a flash drive, it is more convenient to have separate APK files and a ZIP cache archive.

Folder structure for the cache:
/Android/obb/com.example.game/
/Android/data/com.example.game/

It is important to check the integrity of the downloaded archives. A damaged cache file will cause the game to crash when loading resources. If the archive is password-protected, the password is usually indicated on the download page.

The process of transferring the cache to a flash drive

The most critical stage is the correct placement of the cache files. An error in the folder path will result in the game not seeing the resources and requiring the data to be downloaded again. The algorithm of actions depends on whether the game is already installed on the device or you are performing a clean installation.

If you are installing the game from scratch, first copy the cache folder from the archive to the appropriate directory on the flash drive. The path should look like /path_to_flash drive/Android/obb/game_package_name/. Inside this folder there should be a file with the extension .obb or a set of resource files.

After placing the cache, run the installation of the APK file. During the installation process, the system may request access to the storage - allow it. After installation is complete, do not launch the game immediately. First, check whether the application recognizes files on external media.

File type	Where to copy to	Example path	Importance
APK	Any folder	/Download/game.apk	High
OBB (Cache)	Android/obb	/SDCard/Android/obb/com.game/	Critical
Data (Data)	Android/data	/SDCard/Android/data/com.game/	Average
Save	Inside the Data folder	/files/saves/	High

What to do if the Android folder is not on the flash drive?

Create a folder structure manually through the file manager. First create an Android folder with obb and data folders inside it. Please respect the case of letters - names must be written in lowercase letters.

Solving launch and access problems

A frequent problem is the game refusing to start after transferring files to a flash drive. This is often due to the application looking for data in the internal storage, ignoring the external storage. Some file managers have a “Set as primary storage” option in their settings, but it doesn’t work on all devices.

Try creating a symbolic link or using the “Merge Folders” feature if your file manager supports it. This will allow the system to think that the files are in internal memory, although they are physically located on the flash drive. This requires granting extended rights through Shizuku or similar services.

Also check your energy saving settings. Some smartphones turn off the power to the USB port to save power, which leads to a loss of connection to the flash drive during gameplay. Go to Settings → Battery and exclude the file manager or the game itself from the list of optimized applications.

⚠️ Attention! Do not remove the flash drive while the game is running or progress is being saved. This can lead to damage to the save files and the need to go through the game again.

Features of working with different versions of Android

Starting with version Android 11, Google has tightened its file system access policy (Scoped Storage). Applications can no longer freely scan the entire external drive. This complicates the process of manually installing games, since even file managers have limited rights.

On Android 12 and 13 the situation has worsened: access to the folder Android/obb on external drives can be completely blocked for third-party applications without using special APIs. In such cases, the only way out is to use the built-in download manager or developer tools (ADB).

For users of older versions (Android 9 and below) the process is much simpler. The system allows you to designate a flash drive as the default installation location. In this case, when installing any APK, the system will automatically prompt you to select an external media.

⚠️ Attention! The settings interface and menu item names may differ depending on the manufacturer's shell (MIUI, OneUI, ColorOS). Check the steps with the latest manuals for your smartphone model.

Alternative methods and utilities

If manually copying files seems too difficult, you can use utilities to transfer applications. apps like App2SD or built-in transfer functions in application settings allow you to move part of the game data to a memory card. However, this method does not always transfer heavy cache.

Advanced users can use debugging ADB to force installation of applications on external media. The command adb shell pm set-install-location 2 changes the global installation location setting. This requires connecting the smartphone to the computer and having the drivers installed.

Another option is to use terminal emulators on the device itself. Using the command line, you can perform copy operations and change permissions (chmod, chown), which are not available in the GUI. This method requires knowledge of Linux commands.

Is it possible to play online games from a flash drive without losing speed?

Yes, the loading speed of levels in online games depends on the reading speed of the flash drive. Using standard drives USB 3.0 and file system exFAT provides performance comparable to internal memory. However, delays (ping) depend only on the quality of the Internet connection, and not on the location where the game files are stored.

Why does the game require you to download the data again after transfer?

This happens if the game does not find the license check file or cache in the expected directory. Often the cause is that the cache folder name does not match the application package name. Check that the name of the folder in Android/obb exactly matches the package name game (for example, com.rockstargames.gtasa).

Is it safe to store game saves on a flash drive?

Storing saves on a flash drive is safe provided you remove the device correctly. The risk of data loss is higher if you remove it correctly. than on the internal memory, due to the possibility of physical damage to contacts or a sudden power outage. Regularly create backup copies of your saves in the cloud storage.

How to find out if my phone supports OTG?

The most reliable way is to connect a flash drive through an adapter and see if a notification appears. You can also download the application USB OTG Checker from the application store. In the technical specifications on the manufacturer's website, look for the item “USB Host” or “OTG support.”

Is it possible to transfer a game already installed in the internal memory?

Yes, but the easiest way is to delete the game and install it again, immediately sending the cache to a flash drive. When you try to transfer an installed game through the system settings, only part of the APK file is often transferred, and the heavy cache remains in the internal memory. memory, which does not solve the problem of lack of space.