How to format properly SD-Map on the phone Xiaomi: 3 working methods

Formatting SD-cards on smartphones Xiaomi, Redmi or POCO — Whether you buy a new memory card, want to clear the old one from viruses or prepare it for use as an internal storage, proper formatting ensures stable operation without errors. However, many users make a critical mistake: choose the wrong type of formatting or interrupt the process, which leads to data loss or even card failure.

In this article, we’ll break down all the formatting options available on Xiaomi phones (including the MIUI 12/13/14 and HyperOS models), explain how formatting is different as a portable and internal drive, and warn against common errors, and learn how to recover data if the formatting failed, and what tools will be suitable for this.

Preparation for formatting: what to do before the start

Before you start formatting, make sure you follow all the critical steps.Neglecting preparation can result in the loss of important files without the ability to restore or even damage the card's file system.

• 📱 Back up the data. Move all photos, videos and documents from SD-Maps to a computer, cloud (Google Drive, Mi Cloud) or other media. Formatting completely erases information.
• 🔋 Charge your phone at least 50%. Interrupting the process due to battery discharge can make the card unreadable.
• 🔍 Check the card for errors. If the phone gives out notifications of the type «SD-Map damaged, first try to scan it on PC using chkdsk (for Windows) or fsck (for PC) Linux/Mac).
• 📌 Make sure to be compatible. exFAT cards may not be supported on older Xiaomi models (e.g. Redmi) 4A or Mi A1). They'll only be fine. FAT32.

⚠️ Note: If you format the card as internal memory, it can’t be retrieved and used on other devices without completely erasing the data.

It is also worth noting that some Xiaomi models (for example, the same as the one in the past, POCO X3 Pro or Redmi Note 10 Pro support hybrid slot – if you insert two SIM-card, microSD slot will be locked. SIM-maps in the menu Settings → SIM-maps and mobile networks.

Method 2: Formatting through phone settings (as a portable device)

The easiest and safest method is to use the built-in MIUI or HyperOS tools, which is suitable if you want to use the card as a removable drive for photos, music or documents.

Instructions:

1. Put it in. SD-card to your phone and wait for it to be recognized.
2. Open Settings → Memory (or Storage in new versions).
3. Tap your name on it. SD-maps (e.g. SanDisk) 64GB»).
4. In the upper right corner, press three dots (⋮) and select Storage Settings.
5. Select Format → Format as a portable device.
6. Confirm the action, wait until the completion (usually takes 1-3 minutes).

By default, the phone will offer an exFAT file system (for cards >32 GB) or FAT32 (for cards ≤32 GB).If you want compatibility with older devices (for example, with Xiaomi Mi 5), choose FAT32 manually.

Save all data from the card to another media

Check the battery (minimum 50%)

Make sure the card is not locked by a physical switch (if any)

Select the right file system (exFAT/FAT32)-->

⚠️ Warning: If the card is not identified after formatting, try re-extracting and pasting it. If the problem persists, check the card on another device - it may be physically damaged.

Method 2: Formatting as an internal memory (Adoptable Storage)

This method allows us to use SD-It's a card that's part of the phone's internal storage, and all apps, games and system files are automatically stored on it:

• 🔒 The map cannot be retrieved and used on other devices without full formatting.
• ⚡ The speed depends on the class of the card. UHS-I Class 10 or higher (e.g. SanDisk Extreme, Samsung) EVO Plus).
• 📉 Some applications (such as WhatsApp or banking) may not work from internal memory to the computer. SD.

How to format:

1. Go to Settings. → Memory. → [Your name is yours. SD-map].
2. Tap it on three points (⋮) → Storage settings → Formatting as an internal.
3. Read the warning and press Erase and Format.
4. Wait until it is completed (it can take up to 10 minutes).
5. Once formatted, the phone will suggest transferring data from the internal memory to the SD, and you can do it right away or later manually.

Important: After this process, the card will be encrypted and cannot be read on a PC without special tools (for example, DiskInternals Linux Reader).

Method 3: Formatting via PC (if the phone can’t see the card)

If Xiaomi doesn't recognize SD-card or make a mistake «SD-It's damaged, you can format it through a computer, you need a card reader or an adapter.

Instructions for Windows:

1. Connect the card to the PC through the card reader.
2. Open this computer (or my computer) and find your computer. SD-map.
3. Right-click on the mouse button → Format.
4. Choose the file system: FAT32 for cards up to 32 GB (compatible with all devices); exFAT for cards > 32 GB (recommended for Xiaomi); NTFS is not suitable for Android!

Start.

For Linux/Mac, use GParted or Disk Utility respectively. Once formatted, safely remove the card and paste it back into your phone.

⚠️ Note: If the card is defined as RAW (Do not format it immediately. First try to restore data using TestDisk or Recuva, and then format it.

5. Common Mistakes and How to Avoid Them

Even experienced users sometimes face problems with formatting. SD-Xiaomi maps. Let's look at the most common mistakes and how to solve them.

• 🚫 «SD-The card is not supported" - check that the card is formatted in the FAT32 Some phones (like Redmi) 7A) not working NTFS.
• 🔄 «Formatting is hanging. "" Don't pull the card out, don't restart the phone. Wait 10 to 15 minutes. If the process isn't complete, pull out the map and format it on your PC.
• 📉 «After formatting, the memory didn't increase" - if you format the card as an internal one, restart the phone. Sometimes the changes only apply after the reboot.
• 🔒 «Card locked – check the physical switch on the adapter SD (A virus can also cause a blockage, scan the card with an antivirus (Dr.Web or Kaspersky).

If the phone still doesn’t see the map after formatting, try the following steps:

1. Clean the contacts of the card with a soft eraser (sometimes oxidation interferes with reading).
2. Try another card – if it doesn’t work, the problem may be the phone slot.
3. Update the firmware through Settings → About the phone → System update.

💡

If you're often connected SD-map to different devices, format it in exFAT on a PC with a cluster size of 32 KB. This will ensure maximum compatibility and read/write speed.

6.Recovery of data after failed formatting

If you're formatting. SD-the card by mistake or the process is interrupted, the chances of recovering the data depend on the type of formatting:

• 🔄 Fast formatting – files can be recovered with high probability.
• 🧹 Full formatting – the odds are lower, but possible with professional tools.

Recovery programmes:

Important: after random formatting, do not write new files to the card - this reduces the chances of recovery. Connect the card to the PC through the card reader and use one of the specified programs.

💡

If the card was formatted as internal memory on Xiaomi, standard recovery programs won’t help, which would require specialized software like UFS Explorer or a service center.

7. Optimization of work SD-post-formatted maps

So SD-The card worked quickly and without failure, follow these tips:

• 🛠️ Turn off the app caching. Go to Settings. → Annexes → [Select the application] → Warehouse → Clear the cache. It'll reduce the load on the card.
• 📁 Do not store system files on SD. Transfer only media files (photos, videos, music) to it, and leave applications in internal memory.
• 🔄 Check the map regularly for errors. Use the chkdsk utility on your PC or app. SD Card Tester from Google Play.
• 🔋 Remove the card correctly. Before extracting tap on the "Safe Retrieval" notification or mount the card in the settings.

If you use the card as your internal memory, keep an eye on the space, and when it runs out, the phone starts to slow down, and the optimal way to do that is to leave 10 to 15 percent of the space.

Frequently asked questions