Modern smartphones running Android 13 offer flexible memory expansion options, but connecting an external drive often requires preliminary preparation. Users are faced with the need to change the file system so that the device can correctly recognize and write data to a USB flash drive or SD card via an OTG adapter. The standard formatting procedure eliminates reading errors, format compatibility, and allows you to select the drive operating mode.
The process of erasing data on external media in this version of the operating system has become more intuitive, but hidden settings can confuse a beginner. It is important to understand the difference between using a flash drive as portable storage for media files and integrating it as an extension of the device's internal memory. The wrong choice of mode can lead to the inability to read data on other gadgets or loss of the ability to install applications.
In this article we will analyze in detail the algorithm of actions, the technical nuances of choosing a file system and methods for solving typical errors that arise when connecting external drives to smartphones based on Android 13. You will learn how to prepare a drive without using third-party software and a computer.
Preparing the drive and checking compatibility
Before starting any operations with memory, it is critical to ensure that the hardware is physically in good working order. USB drive It must be working properly, and the OTG (On-The-Go) adapter must be fully compatible with your smartphone. Not all cables support data transfer; some are designed exclusively for charging, which often becomes the reason for false diagnoses of a flash drive failure. Check the integrity of the contacts and the absence of visible damage to the case.
The operating system Android 13 supports most modern file systems, but for correct operation it is preferable to use exFAT or FAT32 formats. If your flash drive was previously used in Windows with the NTFS file system, the phone can only detect it in Read-Only mode. In this case, formatting is a mandatory step to obtain writing rights.
⚠️ Attention: The formatting process irreversibly deletes all data from the media. If you store important photos or documents on a flash drive, be sure to copy them to your computer or cloud storage before connecting to your smartphone.
It is also worth considering power consumption. Powerful external SSD drives may require more power than the USB port of a mobile device can provide. In such cases, the system may simply not see the drive or constantly turn it off. For large amounts of data, it is recommended to use active hubs with their own power supply.
Use original or certified OTG adapters - cheap analogues often cause failures in data transfer and can damage the smartphone's power controller.
Connecting a USB drive to a smartphone
After checking the equipment, connect the flash drive to the Type-C connector or Micro-USB via an appropriate adapter. The system should automatically respond to the connection with a notification at the top of the screen. If a pop-up window prompting you to configure the drive does not appear, lower the notification curtain and look for a message about connecting a USB device. In some shells, such as Samsung or Xiaomi, the notification may be hidden in the system messages section. Click on it to go to the mode selection menu. If automatic detection does not occur, go to the settings manually through the item
In some shells such as OneUI from Samsung or MIUI from Xiaomi, the notification may be hidden in the system messages section. Click on it to go to the mode selection menu. If automatic detection does not occur, go to the settings manually through the item Settings → Device maintenance → Storage or a similar section in your firmware.
Sometimes the smartphone asks for permission to access files. Confirm the action by clicking "Allow" or "OK". Lack of response to the connection may indicate that USB debugging mode is enabled or a driver conflict. In rare cases, you need to reboot the device with the drive already connected to initialize the controller.
Selecting a mode of use: Portable or Internal storage
When you connect for the first time Android 13 you will be prompted to choose one of two options for using an external drive. The first option is “Portable Storage”. In this mode, the flash drive works like a classic USB drive: you can store photos, videos, music and documents on it, easily remove it and connect it to a computer or other phone without losing data.
The second option is “Internal Storage”. This feature, known as Adoptable Storage, encrypts the drive and ties it to a specific device. The flash drive becomes part of the system partition, allowing you to install applications and game caches on it. However, it will be impossible to remove such a disk without formatting and losing data on another device.
- 📂 Portable mode ideal for transporting files between different devices and creating backup copies of media.
- 🚀 Internal mode necessary if the phone’s built-in memory is full and you need space to install heavy applications.
- 🔒 Encryption Internal mode protects data, but makes the drive useless if the smartphone breaks down.
The choice depends on your tasks. If you need versatile storage, choose portable storage. If the goal is to unload the system partition from apps, use the internal memory mode. You can change this choice later only through full formatting, which will again lead to the deletion of all files.
The “Internal storage” mode requires the use of fast memory cards (class U3 or A2), otherwise the smartphone may slow down due to the low speed of reading random blocks.
Step-by-step guide for formatting through settings
For To start the formatting process, go to the storage settings menu. The path may vary slightly depending on the manufacturer, but usually it looks like Settings → Storage → USB storage. Click on the name of your device in the list of available drives.
In the menu that opens, find the “Format” or “Customize” item. The system will issue a warning about data loss. Confirm the action. During the formatting process, Android 13 will create a new partition table and file system. Do not interrupt the process or remove the flash drive until a success message appears.
Settings → Storage → [USB storage name] → Menu (three dots) → FormatIf you have selected internal storage mode, the system may offer to transfer existing data from the built-in memory to a new drive. This is a convenient way to free up space right after setup. Wait until the data migration is completed, as during this time the phone may work slower than usual.
☑️ Formatting checklist
Solving problems with the NTFS and exFAT file system
Standard utility Android formatting usually offers a choice between FAT32 and exFAT. The file system FAT32 is the most compatible, but has a limit on the size of a single file of 4 GB. This is critical for storing high-definition movies or disc images. In such cases, you need to use exFAT.
If your flash drive is formatted in NTFS (Windows standard), Android can see it, but will not allow you to write files. Third-party applications such Microsoft exFAT/NTFS for USB by Paragoncan solve this problem without formatting, providing read and write access. However, native NTFS support in Android 13 depends on the specific device manufacturer.
| File system | Max. file size | Android compatibility | Best use |
|---|---|---|---|
| FAT32 | 4 GB | Full (read/write) | Documents, music, old photos |
| exFAT | Almost unlimited. | Full (on modern devices) | 4K video, large archives, games |
| NTFS | Almost unlimited. | Read only (often) | Working with a PC, transferring system files |
When choosing exFAT, make sure that your card reader or adapter also supports this standard. Outdated hardware may not work correctly with new file systems, causing I/O errors when copying large files.
Why doesn't Android see a flash drive in NTFS?
The Android kernel contains drivers for NTFS, but many manufacturers disable write support for licensing compatibility or system stability reasons.
Using the command line and ADB for advanced users
For specialists who require full control over disk partitions, a formatting method via USB debugging and the ADB console (Android Debug Bridge) is available. This method allows you to manually create partitions, change the volume label, or restore a damaged partition table that the graphical interface does not see.
First, you need to activate developer mode and enable USB debugging in the smartphone settings. Connect your phone to your computer and enter the command to access the shell. Next, the utility sm (storage manager) is used to manage drives.
adb shellsm list-disks
sm partition disk:179,64 private
In the command above disk:179,64 is the identifier of your drive, which you need to find out through the command list-disks. The parameter private indicates formatting to internal storage. For portable mode, use the publicparameter. Be extremely careful: an error in choosing a disk identifier can lead to formatting of the phone's built-in memory.
⚠️ Attention: Using ADB commands requires high qualifications. Entering a command incorrectly can turn your smartphone into a “brick” or destroy all data beyond recovery. Use this method only if the standard settings do not work.
This method is also useful if the system sees the flash drive, but does not offer to format it through the menu. Forced partitioning via the console often solves problems with incorrect MBR or GPT partition tables.
Before entering ADB commands, take a photo of the output of the list-disks command in order to know exactly the identifier of the external drive and not confuse it with internal memory (usually designated as emulated).
Common errors and methods for eliminating them
One common problem is the message “USB drive is damaged” or “Requires formatting” even if the flash drive is working. This is often due to incorrect extraction in the past. Try connecting the drive to the PC, checking errors using standard Windows tools (chkdsk) and then connecting it to the phone again.
Another situation: the phone sees the flash drive, but does not allow it to be formatted, the button is inactive. This may be due to Read Only mode being enabled on the adapter's physical switch (if there is one) or due to system permissions. Rebooting the device in Safe Mode will help eliminate the influence of third-party antivirus applications or file managers.
If formatting fails, the drive may have bad sectors or has reached its write cycle limit. In this case, software methods are powerless, and replacement of the physical media is required. Also check if the OTG adapter is overheating - thermal protection can turn off the power to the drive at the most critical moment.
Is it possible to cancel formatting if I pressed the button accidentally?
Unfortunately, no. The formatting process in Android 13 starts immediately after confirmation. If the process is not yet complete, you can try to quickly remove the flash drive, but this will most likely damage the file system. Data recovery is only possible with specialized software on a PC after connecting the card through a card reader.
Why is the flash drive not visible in Explorer after formatting?
Make sure you have selected the “Portable storage” mode. If “Internal” is selected, the flash drive is hidden from public access and is visible only to the system for installing applications. Also check if the drive is disabled in the storage settings (the “Eject” button should be inactive and the status should be “Connected”).
Does formatting affect the speed of the smartphone?
Format itself does not affect the speed. However, the choice of file system and operating mode matters. Internal mode can slow down the device if the write speed of the flash drive is lower than the speed of the built-in memory. The exFAT format works faster with large files than FAT32 due to the lack of fragmentation of small blocks.
How to format a flash drive if the settings menu freezes?
Try clearing the cache of the Settings or Storage application in the application settings section. If this does not help, use a computer: format the flash drive to FAT32/exFAT on your PC, then connect it to your phone. Android should recognize the finished file system without the need for reformatting.
Does Android 13 support flash drives larger than 1 TB?
Yes, the Android 13 operating system supports large storage drives, including 1 TB and above, provided that the exFAT file system is used. Problems can only arise at the level of the hardware controller of a particular smartphone or the quality of the OTG cable used.