How to set up a memory card in Xiaomi Redmi 8: from selection to optimization

Xiaomi Redmi 8 is one of the most popular budget smartphones with support for expanding memory to 512 GB via MicroSD. However, many users face problems: the phone does not see the card, data is not portable, or the speed of work leaves much to be desired. In this article, we will analyze all the stages of configuration, from choosing the right memory card to fine-tuning storage.

Redmi 8 supports a dedicated slot, but has format and speed limitations, such as exFAT cards that are not supported out of the box, but need to be formatted into a format. FAT32 It's also important to consider that the portability of applications to SD-map MIUI It doesn't work like it does on pure Android, and we'll show you how to get around those limitations and make the most of the extra storage.

1. Memory Card Choice: Which MicroSDs Are Right for Redmi 8

Not every memory card will work consistently in the Redmi 8. the manufacturer officially declares support for microSD up to 512 GB, but there are nuances:

• 🔹 Speed Class: Minimum Recommended Class 10 (UHS-I). To record video 4K Frequent file transfer is better to choose UHS-I U3 or V30.
• 🔹 File system format: Redmi 8 only supports file system FAT32 (Up to 32 GB) and exFAT (64 GB), but the latter may not be recognized without additional manipulations.
• 🔹 Brands: best options – SanDisk Ultra, Samsung EVO Plus, Kingston Canvas Go! Cheap no-name cards are often forged, indicating an inflated volume.

Important: If you plan to transfer applications to the map, choose models with high random write rate (IOPS). For example, SanDisk Extreme shows the best results in tests with the MIUI, budgetary.

⚠️ Note: 128GB or more cards are sold with exFAT file system. Redmi 8 may not see them - you will need to reformat them into a new system. FAT32 via a PC (e.g., a GUIFormat utility or SD Card Formatter).

2. Insert memory card: step-by-step instruction

The slot for the MicroSD in Redmi 8 is located on the side, under the tray for the SIM-To put a map in:

1. Turn off your phone (required!) to prevent damage to your contacts.
2. Take a paper clip or a special key from the kit, insert the tray into the hole and gently press it to move out.
3. Put the memory card in the top slot of the tray (bottom - for SIM). Contacts should be directed downwards, the beveled angle should be left.
4. Carefully insert the tray back before the click.

After switching on the phone will be a notification "New" SD-If you don't have one, check it out:

• 🔄 Is the card inserted correctly (turn it over).
• 🔄 No damage to the contacts (dust, scratches).
• 🔄 Does the phone support this volume (e.g. 1TB cards are not compatible).

⚠️ Warning: If the phone doesn't see the card after several attempts, try inserting it into another device (for example, a laptop.

3. Memory card formatting in Redmi 8

If the card is new or has been used in another device, it must be formatted. MIUI There are two options:

Method 1: Formatting through phone settings

1. Go to Settings → Memory → SD card.
2. Click "Format" (or "Configure" if the card is new).
3. Select “Internal Memory” (for porting applications) or “Portable Storage” (for files only).
4. Confirm the action. It'll take 1-5 minutes.

Method 2: Formatting via PC (if the phone can’t see the card)

If Redmi 8 does not recognize the card, connect it to your computer via a card reader and:

1. Open Disk Management (Win + X → Disk Management).
2. Find yours. SD-map, right-click and select "Format".
3. Specify the file system: Up to 32 GB — FAT32. 64GB – exFAT, but Redmi 8 may not support it out of the box").

"OK"

After formatting via PC, paste the card back into your phone. If it's still undetectable, check it on another device or try formatting it in a different device. FAT32 utility-wise SD Card Formatter (you can download it on the official website) SD Association).

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If your phone says “Map is damaged,” try formatting it into a new format. FAT32 With a cluster size of 32 KB, this often solves the compatibility problem.

4.Setting up the card as internal memory (for applications)

One of the key benefits of the Redmi 8 is that it can use MicroSD as internal memory to install applications.

• 📱 The card should be fast (minimum Class 10, better). UHS-I U3).
• 📱 Once formatted as internal memory, it cannot be used in other devices without being re-formatted.
• 📱 Not all applications support the transfer to SD (especially system and cache games).

To set up the card as an internal memory:

1. Insert the card and wait for the notification "New" SD-map".
2. Go to Settings → Memory → SD Card → Set up → Internal Memory.
3. Read the warning and click "Clear and Format".
4. After formatting, select "Transfer Data" (optional) or "Do Not Portable".
5. Reboot the phone.

Now the map will be displayed as part of the internal memory, so that you can transfer the applications to it:

1. Open Settings → Applications → Select the application → Memory.
2. Click "Change" and select SD-map.
3. Confirm the transfer. Some data (such as game cache) will remain in the internal memory.

⚠️ Note: Once formatted as internal memory, you can't just retrieve it, which can cause applications to crash. Always use Safe Retrieval in your storage settings.

5 Storage optimization: how to use memory card effectively

Even after configuring the card as internal memory, Redmi 8 can slow down when working with applications on the Internet. SD. Here’s how to optimize productivity:

• 🚀 You can only transfer light apps, like instant messengers, music players, office software, and heavy games like Genshin Impact, you can leave them in your internal memory.
• 🚀 Clear the cache: go to Settings → Memory. → Clean and remove unnecessary files from the card.
• 🚀 Disable auto-save media: in WhatsApp, Telegram and other messengers, turn off the automatic upload of photos / videos to the card - this saves space.
• 🚀 Use the file manager: MI File Manager allows you to move files between memory and card without losing quality.

To speed up the work of the map can also:

• 🔧 Regularly (once every 1-2 months) format it via PC (with a preliminary backup of data).
• 🔧 Not filling the card by more than 80% – this reduces the speed of writing.
• 🔧 Avoid writing/reading large numbers of files at the same time (e.g. when copying a photo package).

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Formatting a card as internal memory speeds up applications but reduces their lifespan. SD only for media files and lightweight programs.

6. Solving Common Memory Card Errors

Redmi 8 users often encounter errors when working with MicroSD. Let’s consider the most common ways to fix them:

Mistake: “The map SD It's damaged. Try reformatting it"

Reasons:

• 🛑 Improper retrieval of the card.
• 🛑 Virus or Failure of File System.
• 🛑 Fake card (real volume less than claimed).

Decision:

1. Connect the card to the PC and check it with the utility CHKDSK: chkdsk X: /f (where X is the letter of the map disk).
2. If it doesn’t help, write the map in FAT32 through SD Card Formatter.
3. Check the actual size of the map utility H2testw (If the amount is less than the declared card is fake).

Mistake: "SD-map suddenly deleted"

Reasons:

• 🛑 Poor contact in the slot (dust, deformation).
• 🛑 The card overheats (especially when recording long-term video).
• 🛑 Incompatibility of the file system (e.g, NTFS or ext4).

Decision:

1. Clean the contacts of the card and slot in the phone with a dry soft brush.
2. Try another card – if the problem repeats, the slot is faulty (repair required).
3. Format the map in FAT32 cluster size 32 KB.

Error: “Not enough space on the device” when transferring applications

Reasons:

• 🛑 The card is formatted as a portable storage (not internal memory).
• 🛑 The application does not support the transfer to SD.
• 🛑 There is not enough free space on the map (at least 10% of the volume is needed).

Decision:

1. Reformat the card as internal memory (see section 4).
2. Use it. ADB for forced transfer: adb shell pm set-install-location 2 (requires developer mode enabled).
3. Clear the app cache in Settings → Memory. → Cleanup.

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If the card stopped being determined after the MIUI update, try rolling back to the previous firmware version or resetting your phone settings (without deleting data).

7. Data transfer to memory card: photos, videos, music

By default, Redmi 8 saves media files to internal memory to transfer them to the map:

Method 1: Through camera settings

1. Open the Camera app.
2. Press the gear (Settings) → "Warehouse".
3. Choose. SD-map.

All new photos and videos will be saved to the map.

Method 2: Transfer existing files

1. Open the MI File Manager (or any other file manager)
2. Go to the file. DCIM Pictures (Inner Memory).
3. Select files, click "Move" and select a memory card.

Method 3: Automatically Transfer via Google Files

Install the Google Files app from the Play Market:

1. Open the Files. → "Cleanup" → "Make room".
2. Select "Move to" SD-map".
3. Mark the files (photos, videos, documents) and confirm the transfer.

You can also use music and other files. MI File Manager or ES Explorer: The main thing is, don't transfer system application files (Android folders, data) to the map, which can cause crashes.

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To save space on internal memory, set up auto-save messengers (WhatsApp, Telegram) directly to the map. In the settings of each application, there is an option "Memory" or "Storage".

FAQ: Frequent questions about setting up a memory card in Redmi 8