Learn how to format a write-protected USB pen drive or flash drive or SD card on Windows 11/10. Remove Read-only attributes using diskpart.

If Windows won't format your USB drive to the FAT32 file system, remove the write protection or use CMD, PowerShell, or free software to do the same.

The best way to clear an SD card is to format it, which is like hitting a factory reset button; it'll erase every file, leaving just an empty card.