How do you do it? SD-Internal memory card on Xiaomi Redmi 7A: guide

Xiaomi Redmi 7A owners often face a shortage of internal memory — just 16 GB or 32 GB on the basic versions. Even after transferring photos to the cloud and deleting the cache of free space applications, the solution is to turn a microSD card into an extension of internal memory. This process is called Adoptable Storage and is available on Android 6.0+, which is equipped with Redmi 7A.

But it’s not that simple: wrong actions can lead to data loss or even card locking on another device, and this article provides a step-by-step nuanced instruction, formatting comparisons, map selection recommendations, and answers to frequent errors. We will also discuss why some applications cannot be moved to the SD-The map even after the merger and what to do in such cases.

⚠️ Critical: once combined, the card cannot be retrieved without losing data, it will become part of the system. If you plan to use it later in your camera or other phone, choose an alternative method of expanding memory (for example, transferring files manually).

1. What? SD-map to choose for Redmi 7A

Not every microSD is suitable for use as internal memory. Xiaomi Redmi 7A supports microSDXC cards up to 256 GB, but there are key limitations:

• 🔹 Speed class: minimum UHS-I Class 10 (or A1/A2 Class Class Class Cards 4 class 6 They'll slow down the system.
• 🔹 Manufacturer: give preference to brands SanDisk, Samsung EVO, Kingston Canvas – Cheap no-name cards are often forged to indicate oversized volume.
• 🔹 Volume: optimally 64-128 GB. 32 GB cards will quickly fill up, and 256 GB may not justify investment due to the limitations of Android.

⚠️ Note: if you have purchased a card marked "App Performance" (e.g. SanDisk Ultra) A1), It doesn't guarantee perfect performance. Tests show that even if you're in the middle of the world, you're in the middle of the world. A1-Apps can slow down when they're in heavy use. A2, if the budget allows.

2. Preparation of the phone before memory combination

Before you make the card an internal memory, follow the mandatory steps:

1. Back up your data. Use Settings → System → Backup or applications like Swift Backup (root rights required).
2. Check the card for errors. Put it on your phone, go to Settings. → Warehouse, select. SD-map and press "Verification".
3. Charge the battery. Make sure the charge level is at least 50% - the formatting process can take up to 10 minutes.
4. Disable antivirus. Software like Avast or 360 Security can block system operations.

⚠️ Note: If you already have files on the map, they will be deleted when formatted, move them to your computer or to the cloud (Google Drive, Mi Cloud). Also make sure the card is not encrypted — Redmi 7A Does not support encryption of external drives in internal memory mode.

3. Step-by-step instruction: how to do SD-memory-card

Now, to the main process, it's important to follow the instructions precisely to avoid errors.

1. Put it in. SD-slot 7A (located under the back cover, next to the slot for SIM-map).
2. Open the Settings → Storage.
3. Click on your name. SD-maps, for example, "SD-map: 64GB").
4. In the upper right corner, tap three points (⋮) and select "Storage settings".
5. Click on “Format as internal” (or “Inner Memory” in some versions of MIUI).
6. Confirm the action by reading the warning that the card will be encrypted and only work on that device.
7. Wait until the formatting is complete (it can take 5-15 minutes).

After the reboot, check the result in Settings → Storage. The combined memory will appear as a single unit (for example, "Inner memory: 48 GB" instead of "16 GB + 32 GB").

4. How to transfer applications to SD-post-community

Even after formatting the map as an internal one, not all apps can be migrated, depending on the developer's policy and the Android version.

• 📱 Through Settings: Go to Settings → Annexes → Select an application → Storage and click "Change." If you have an option "SD-map active - move forward.
• 🛠 With help. ADB: For applications where the transfer button is inactive, use the command: adb shell pm set-install-location 2 (setting required) ADB).
• ⚠️ Exceptions: System applications (Mi) UI, Google Play Services and Games with Protection (PUBG, Genshin Impact cannot be moved.

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If the app slows down after the transfer, return it to internal memory. Some programs (such as WhatsApp or Telegram) do not work well with slow A1 cards.

5. Alternative method: formatting via ADB

If Redmi 7A does not have an option to format the map internally, use Android Debug Bridge (ADB), which requires a computer, but works 90% of the time.

Step 1. Install ADB:

1. Download Platform Tools from the Android Developers website.
2. Unpack the archive in the root of the C:\ disk (e.g., C:\platform-tools).
3. Enable “Debugging by USB” on your phone: Settings → About Phone → MIUI Version (click 7 times), then Settings → Additional → For Developers → Debugging by USB.

Step 2. Follow the commands:

1. Connect your phone to your PC and open the command prompt in the platform-tools folder (click Shift + right mouse button → “Open PowerShell window here”).
2. Enter in turn: adb devices (should appear device, confirm access on the phone). adb shell sm list-disks (remember the card ID, for example, disk:179.64). sm partition disk:179.64 private (replace 179.64 with your ID).

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Once you execute the sm partition command, the phone will automatically restart. Don't remove the card or interrupt the process! Otherwise, the card may become unreadable.

6. Frequent errors and their solutions

When you combine memory on Redmi 7A, users face typical problems.

• ❌ "Map damaged" or "Can't format": Check the card on PC H2testw (The utility will detect a fake or a broken sector. FAT32 via PC, then try again on the phone.
• ❌ "Not enough space" after the merger: "It's normal - some of the memory is reserved for system files. ~90% of the card size. Move the app cache: Settings → Warehouse → Cache data. → Move it to SD.
• ❌ Phone doesn't see card after reboot: Remove and paste the card again. If it doesn't work, format it as portable and repeat the process. Check the card slot for dust or damage.

7 How to Get It Back: Undoing Memory Combination

If you decide to return SD-the card to its original state (for example, for use in another device), follow the following steps:

1. Transfer all important data from the card to your phone or PC.
2. Open the Settings → Storage.
3. Press on. SD-map → triple-menu (⋮) → "Formatting as a portable".
4. Confirm the action. The card will be formatted in FAT32 or exFAT and will become removable.

⚠️ Warning: After unbundling, all data on the map will be deleted, including the transferred applications, and there may be a "Map used" error - in this case, restart the phone in Safe Mode (press the power button). → "Restart in Safe Mode" and try again.

FAQ: Answers to Frequent Questions