Many users looking for ways to update a disk on Android often encounter terminological confusion. In the world of mobile operating systems, the concept of "disk" is not used in the same sense as in desktop Windows PCs. Here we are talking about internal flash memory (eMMC or UFS), which is divided into logical partitions, or an external SD memory card. Updating the “disk” most often involves either installing a new version of the operating system (firmware update) or formatting an external drive to change the file system.
Incorrect understanding of these processes can lead to data loss or even turning the smartphone into a “brick”. If your goal is to improve device performance or free up space, you won't need physical media replacement, but smart software management. It is important to immediately determine what type of update you need: a system update for security and new functions or working with a physical storage medium for storing files.
In this article we will analyze in detail all aspects of upgrading the storage of your gadget. You will learn how to safely install the latest version of Android, how to properly prepare a memory card, and what tools you will need for manual flashing. We will also touch on optimizing the file system so that your device works as quickly and stably as possible.
Differences between updating the system and updating the storage
The first step to understanding the process is to clearly differentiate the concepts. When they talk about updating the “disk” in the context of Android, in 90% of cases they mean updating the system partition System. This is a software procedure that replaces old operating system files with new ones received from the device manufacturer. This process does not affect the physical structure of the memory chip, but only changes the data recorded on it.
On the other hand, there is work with external storage - a microSD memory card. Here, an update may mean changing the file system (for example, from FAT32 to exFAT) or completely formatting it for use as an internal drive. This operation actually changes the layout structure of the “disk”, making it compatible with modern requirements for file volumes of more than 4 GB.
Confusion often arises due to the fact that in the phone settings, memory sections can be displayed simply as “Internal memory” and “SD card”. The user sees a message about low space and decides that they need to “refresh the disk” when in fact they need to clear the cache or transfer media files. Understanding this difference is critical before starting any manipulations.
If your device is slow, try clearing the application cache before updating the system. This often gives a greater performance boost than changing the software version.
Automatic system update (OTA)
The safest and recommended way to update the system partition of your device is to use technology OTA (Over-The-Air). This method allows you to download update packages directly from the manufacturer's servers without the need to connect to a computer. The system itself checks for the presence of a new version, downloads it and offers to install it.
To start the process, you need to go to the settings menu. The path may vary depending on the shell, but usually it looks like this: Settings → About phone → System update. On devices with pure Android, the path may be Settings → System → Advanced → System update. If a new version is available, you will see a "Download" or "Install" button.
Before you start downloading, make sure that the battery level is at least 50-60%. Interruption of the installation process due to low battery is one of the most common causes of software failures. It is also recommended to use a stable Wi-Fi connection, since update packages can weigh from 500 MB to several gigabytes.
⚠️ Attention: If during the OTA update process your phone freezes at the installation stage (the Android logo with a progress bar appears), do not try to immediately remove the battery (if it is non-removable). Wait 10-15 minutes. A forced reboot at this moment may damage the bootloader.
Manual installation of firmware via computer
If automatic updates do not arrive or you want to install a custom build, you will need to manually install the system image. This method involves downloading a firmware file (usually with a .zip or manufacturer-specific extension) and installing it through recovery mode (Recovery Mode) or using a PC.
For devices based on MediaTek processors, a utility is often used SP Flash Tool, and for Samsung, a app Odin. A universal tool for many brands is Fastboot, included in Android SDK Platform-Tools. Before starting the procedure, be sure to unlock the Bootloader, if required for your model, since a locked bootloader will not allow you to install software that is not signed by the manufacturer.
The process is as follows: the phone is switched to Fastboot mode (usually by holding down the volume and power buttons when the device is turned off) and connects to the PC. At the computer command line, enter the command to flash the partitions. For example, to flash a system image, use the command:
fastboot flash system system.imgAfter executing the command, you must reboot the device. The first launch after manual firmware may take up to 10-15 minutes, as the system optimizes applications and creates a cache. At this moment, the Android logo or loading animation may be displayed on the screen.
What are A/B sections?
Modern smartphones use an A/B update scheme. This means that the system has two sets of system partitions (slot A and slot B). The update is installed in an inactive slot, and when the phone reboots, it switches to it. This allows you to roll back to the previous version if the new one contains errors.
Working with a memory card: formatting and file systems
If by the question “how to update a disk” you meant working with an SD memory card, then the key point here is choosing the right file system. Older cards formatted in FAT32 have a single file size limit of 4 GB. This is unacceptable for storing modern high-definition videos or large archives of games.
To “update” the capabilities of the card, it must be reformatted into a file system exFAT. This can be done directly in the phone settings or via a computer. On Android, go to Settings → Storage → SD card → Storage settings → Format. Please note that this operation will completely delete all data from the storage device.
There is also an “Internal Memory” (Adoptable Storage) feature available on many devices. It allows you to combine a memory card with the phone's internal storage into a single logical drive. In this case, the system encrypts the card, and it becomes an integral part of the device, unreadable by other gadgets without resetting.
| Parameter | FAT32 | exFAT | NTFS |
|---|---|---|---|
| Max. file size | 4 GB | Almost unlimited | Almost unlimited |
| Android compatibility | Full | Full (on modern devices) | Partial (requires root access or special software) |
| Reliability | High | Medium (sensitive to extractions) | High (journaled) |
| Recommendation | For cards up to 32 GB | For cards from 64 GB | Only for advanced users |
☑️ Preparing a memory card for formatting
Optimizing memory partitions via Recovery
For advanced users with superuser rights (Root), it is possible to fine-tune memory partitions through custom_recovery_, for example, TWRP. This allows you to resize the system partition, increase space for applications, or create an additional swap partition (Swap), which can speed up the operation of a device with a small amount of RAM.
In the TWRP menu, you can run the command Wipe → Advanced Wipe and select specific partitions for cleaning, such as Dalvik / ART Cache, Cache and System. Clearing these partitions before installing a new update (“clean install”) helps to avoid conflicts between old settings and new firmware code.
However, changing the Partition Table carries high risks. Incorrect sizing may result in the phone not being able to see the internal memory or being unable to boot. Such operations should only be performed if you have an accurate memory map of your specific device model and experience with console utilities.
⚠️ Attention: Recovery menu interfaces and partition names may differ on different smartphone models (Xiaomi, Samsung, Pixel). Always check the documentation for your specific device before changing the partition structure.
Using custom Recovery gives maximum control over memory, but requires unlocking the bootloader and obtaining root access, which voids the warranty.
Possible problems and solutions
During the process of updating the disk or system errors may occur. One of the most common is the message “Update failed” or “Installation aborted”. This is often due to insufficient free space in the internal storage to unpack temporary update files. Free up at least 2-3 GB before trying again.
Another problem is the “bootloop”. If after the update the phone constantly reboots without reaching the desktop, try entering Recovery mode and performing a factory reset (Wipe Data/Factory Reset). This will delete user data, but may save the system from a software conflict.
If the device does not respond to buttons at all and does not turn on, the bootloader or critical system partition may be damaged. In this case, only flashing it through a computer in Download Mode (for Samsung) or Fastboot (for others) will help. Sometimes it is necessary to use authorized service utilities, such as Mi Flash Tool or Hisuite.
- 🔋 Installation error due to low battery - connect the original charger and try again.
- 📶 Interrupted downloading via Wi-Fi - use the mobile data or connect the phone to the PC via USB to transfer the file firmware.
- 🔒 File signature error - make sure that the downloaded firmware is intended specifically for your model and region version.
Always make a complete backup copy of your data (photos, contacts, correspondence) before any type of system update or memory formatting. Cloud services are a good option, but a local copy on a PC is more reliable.
Frequently asked questions (FAQ)
Is it possible to update Android on a very old phone?
Officially - no, manufacturers stop supporting devices after 2-4 years. Unofficially - perhaps if the developer community has created custom firmware (for example, LineageOS) for your model. This requires unlocking the bootloader and installing Custom Recovery.
Will a system update erase my photos and applications?
A regular update via OTA (over the air) saves all user data. However, manual flashing via a computer or resetting via Recovery often requires a full format, which will delete everything. Always read the instructions for the specific installation method.
Why did the phone run slower after the update?
In the first hours after the update, the system performs background file indexing and database optimization. This creates a load on the processor. If the brakes do not go away after 1-2 days, perhaps the new software is too heavy for the old hardware, and you should roll back to the previous version.
How to find out which version of Android is installed now?
Go to Settings → About phone. It will show the Android version number and build number. There is also often a “Software Information” item, where the kernel and baseband versions are listed.
Is it safe to format a memory card as internal?
This is safe for data, but it binds the card to a specific phone. If the phone breaks, it will be impossible to read the data from this card on another device without a complex procedure for recovering encryption keys. Use this mode only if the built-in memory is critically low.