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SD Card Formatting ​

This guide will help you properly format your SD card to the FAT32 file system using built-in Windows tools. This is necessary for correctly writing the firmware image.

Before you start ​

  • Connect the SD card to your computer and ensure it is detected by the system.

  • Back up all important data — formatting will erase all contents.

  • If you are using a microSD adapter, make sure the write-protection switch is unlocked.

    microSD adapter with the Lock write-protection switch circled: make sure it is unlocked before formatting

Step 1: Opening "Disk Management" ​

  • Right-click on the Start button (Windows logo).

  • Select "Disk Management".

    Windows 11 Start button right-click menu with Disk Management highlighted

Step 2: Deleting Existing Partitions/Volumes ​

Locate your SD card in the list of disks (typically labeled as "Removable").

Disk Management: the SD card shown as Disk 1, Removable, 7.50 GB, with existing partitions

If the card has any existing partitions:

  • Right-click on each allocated partition/volume.

  • Select "Delete Volume...".

    Disk Management: right-click an SD card partition and choose Delete Volume...

  • Confirm the volume deletion.

    Delete simple volume warning that all data on it will be erased, Yes button

  • If the SD card has multiple volumes, repeat for all volumes until the entire card space shows the status "Unallocated".

    Disk Management: all 7.50 GB of the SD card (Disk 1) now shows as Unallocated

Step 3: Creating a New Partition/Volume ​

  • Right-click on the unallocated space of the SD card.

  • Select "New Simple Volume...".

    Disk Management: right-click the unallocated SD card space and choose New Simple Volume

  • In the volume wizard that opens:

    1. Click "Next >" on each step.

    image.png 2. Specify the maximum volume size. New Simple Volume Wizard welcome screen 3. Assign a drive letter (e.g., F). New Simple Volume Wizard: assign drive letter F 4. Select the FAT32 file system and enable "Perform a quick format". New Simple Volume Wizard, Format Partition: FAT32, default allocation unit size, Perform a quick format checked 5. Click "Finish" to complete. Completing the New Simple Volume Wizard: Disk 1, 7678 MB, drive F:, FAT32, quick format, Finish

Result ​

After formatting is complete, the SD card should appear as a single partition with the FAT32 file system and have the status "Healthy (Basic Data Partition)".

The disk should look like this:

Disk Management result: SD card (F:) is a single 7.50 GB FAT32 partition, Healthy (Basic Data Partition)

SD card formatting is complete.