How to Format a Micro SD Memory Card

Micro SD cards are incredibly compact storage devices, commonly used to expand the memory capacity of gadgets such as digital cameras, GPS units, and mobile phones. In most scenarios, these cards can be formatted using built-in commands on the device itself. Alternatively, formatting can also be performed directly on a Windows PC or a Mac.

Tap on the 'Settings' app located on your Android device's home screen. This app is typically found on the main screen, and you may need to swipe through different pages to locate it. The icon for 'Settings' may vary slightly depending on your Android version, but it generally resembles a gear.

Select the 'Storage' or 'SD & Phone Storage' option. The name of this option may vary depending on your Android version. Look for an option that includes the word 'Storage'.

• You can identify this option by looking for the SD card icon.

Choose the 'Erase SD card' or 'Format SD card' option. This screen will display information about the SD card's storage, available space, and options like 'Unmount SD Card' and 'Format SD Card'.

• If the 'Format SD Card' option is grayed out, you will need to unmount the SD card first. In this case, tap on 'Unmount SD Card'.

Tap to confirm that you want to erase the data on the SD card when prompted by Android. Your Android device will begin formatting the micro SD card and deleting all its data.

• Multiple screens may appear to confirm your decision to format the SD card. If you proceed, all data on the card will be erased.
• Follow the instructions to complete the erasure and formatting process.
• Once done, the card will be formatted to the FAT32 file system. All data will be wiped, and you will have a freshly formatted SD card ready for use on your Android device.
• Note: With Android 6.0 Marshmallow, you can choose to use the SD card as internal storage or portable storage. If you select portable storage, the SD card can be removed and used on other devices. If you choose internal storage, the card will become the primary storage for your device and won't be readable by other computers.

Locate the 'Settings' app. This method applies to Windows phones, such as Windows Phone 8 and later models, including the HTC One M8, Nokia Lumia 635, Nokia Lumia 830, and Microsoft Lumia 735.

• You can find 'Settings' either through the tiles on the home screen or in the app list.
• Depending on your phone and firmware, you may need to look for the 'Storage Sense' app in the application list.

Scroll down and tap on the 'phone storage' option. On the 'Settings' screen, scroll down to locate the 'phone storage' option, which is typically found between 'battery saver' and 'backup'.

• The 'phone storage' option will display the available storage space on your phone and SD card.
• After tapping on 'Storage Sense', you will see options related to the 'SD card'.

Tap on the 'Format SD card' option. On the 'phone storage' page, a chart showing the memory usage on your device will appear. Tap on the 'SD card' section.

• Formatting the SD card will erase all its contents. Ensure you have backed up your data elsewhere before proceeding.

Select the 'format SD card' option. After tapping on the 'SD card' section, the next screen will present two options: erase the card or format it. Choose the format option.

• Once you tap 'format SD card', a warning prompt will appear, notifying you that all data and files on the card will be deleted. Confirm your choice by selecting 'yes' to proceed with the formatting.
• After the process completes, your phone will recognize the card again and may prompt you to configure it. Follow the on-screen instructions at this stage.

Insert the micro SD card into an adapter or a micro SD card reader. For example, with a SanDisk micro SD card, you will need the accompanying micro SD adapter. The adapter resembles a standard SD card but includes a slot at the bottom for inserting the micro SD card.

• Note: Most micro SD cards with 32 GB or less are formatted in FAT32. Cards with 64 GB or more use the exFAT file system. If you are formatting the SD card for use on an Android phone, Nintendo DS, or 3DS, choose FAT32. For Android, advanced users should note that some apps or custom recoveries may not support exFAT.
• Formatting to FAT32 is generally the best option, though it limits file sizes to under 4 GB.
• You can also purchase third-party micro SD adapters if you don't already have one. Ensure the adapter is compatible with your micro SD card. Some third-party products also include a USB connector, functioning like a flash drive.

Insert the memory card or adapter into the USB port or SD card slot on your Windows computer. Whether you use the SD card slot or USB port depends on your computer and the type of adapter.

• If using a micro SD card adapter, ensure the lock switch is in the 'unlocked' position. If locked, the computer won't read the card or allow modifications, leaving it in 'Read only' mode.
• It's advisable to copy data from the memory card to your computer for backup. This ensures you have a duplicate to restore after formatting.

Click the Start menu and select 'Computer' or 'My Computer'. This method works on Windows 7 and later versions.

• The 'Computer' window will display all drives connected to your system.
• Locate the SD card, which is usually identified by its brand name (unless renamed). If you've renamed it, search for the custom name.

Right-click the card reader in the list of drives and select 'Format'. A window with formatting options will appear.

• If the 'Format' option is missing, you may need to download and install the fat32format utility for the GUI version.

Check the box next to 'Quick Format'. Clicking 'Format' will reveal a menu with various options, including 'Quick Format'. Select this for optimal results.

• If fat32utility is installed, a similar window will appear after running guiformat.exe.
• Before clicking 'Start', verify that all settings are correct. Ensure the 'Capacity' field shows the appropriate memory size and select the desired file system, typically FAT32.

Click the 'Start' button. Your computer will begin formatting and erase all data on the micro SD card.

• Once completed, you'll have a freshly formatted micro SD card ready for use, free of any previous data.

Insert the micro SD card into a micro SD adapter or card reader. For example, with a SanDisk micro SD card, you’ll need the accompanying micro SD adapter. The adapter resembles a standard SD card but includes a slot underneath for inserting the micro SD card.

• Note: Most micro SD cards with 32 GB or less are formatted in FAT32. Cards with 64 GB or more are formatted in the exFAT file system. If you’re formatting the SD card for use on an Android phone, Nintendo DS, or 3DS, choose the FAT32 standard. For Android, advanced users should note that many apps or custom recovery tools may not support exFAT.
• Additionally, on Mac OS 10.6.5 (Snow Leopard) or earlier, you won’t be able to use or format exFAT cards because these older versions of Mac OS do not support this file system. In such cases, you’ll need to upgrade your OS.
• Formatting to FAT32 is often the best option, but note that a FAT32-formatted memory card won’t allow you to copy or store files larger than 4 GB.
• You can also purchase a third-party micro SD card adapter if you don’t already have one. Ensure the adapter is compatible with your micro SD card. Some third-party products even come with a built-in USB connector, functioning like a flash drive.

Plug the card reader or adapter into the USB port or SD card slot on your Windows computer. Whether you use the SD card slot or USB port depends on your computer and the type of adapter.

• If using a micro SD adapter, ensure the lock switch is facing upward and in the unlocked position. If the switch is in the locked position, the computer won’t read the card or allow any changes. The memory card will be in “Read-only” mode.
• It’s better to copy the data from the memory card to your computer for backup. This way, you’ll have a duplicate of your files to transfer back to the card after formatting.

Click the search icon in the top-right corner of the taskbar. Type “Disk Utility” and click on the “Disk Utility” application.

• The Disk Utility app will appear on the screen, displaying all available drives and storage systems.
• You can also open Disk Utility by navigating to the “Applications” > “Utilities” > “Disk Utility” folder.

Click on the name of the micro SD card displayed in the left pane of Disk Utility. The left pane of the window shows your computer’s hard drive, partitions (if any), and external drives.

• The SD memory card will display its available storage capacity, similar to a portable drive.
• Click on the SD card drive to open the options menu.

Select the “Erase” radio button. A page allowing you to erase and format the card will appear.

• You’ll also see three or four radio button options at the top: “First Aid,” “Erase,” “Partition,” “RAID,” and “Restore.” If you’re using El Capitan, you might also notice an “Unmount” option. To proceed, click the “Erase” button.

Choose your desired format. A dropdown menu with formatting options will appear.

• Options include Mac OS Extended (Journaled), Mac OS Extended (Case-Sensitive, Journaled), MS-DOS (FAT), and exFAT. The MS-DOS (FAT) option formats the micro SD card to FAT32. The exFAT option formats the card to the exFAT file system, allowing you to copy and store files larger than 4 GB.
• After selecting your preferred format, enter a name for the memory card.

Click “Erase” to restore and format the memory card. After clicking, a pop-up window will ask if you’re sure you want to erase and format the card. This window will warn you that continuing will permanently delete all data on the card. Click “Erase” on the pop-up to confirm.

• Once you click “Erase,” the computer will format and erase the memory card. When the process is complete, the card’s new name will appear. Your micro SD card is now formatted.

• You should format your micro SD card if it stops working or if you can’t access specific files on it. Formatting the micro SD card often resolves technical issues you might encounter while using the card.
• Formatting will erase all data. Make sure to back up your data to a safe location before formatting the memory card.
• For optimal results and to minimize future technical issues, format the micro SD card directly on the device rather than using a card reader whenever possible.