To remove write protection from your USB flash drive, follow these steps:

1. Check the Physical Switch: Some USB drives have a physical write protection switch. Ensure that it is set to the "unlocked" position.

2. Use Diskpart (Windows):

   • Connect your USB drive to your computer.
   • Press Windows + R to open the Run dialog, type cmd, and press Enter to open the Command Prompt.
   • Type diskpart and press Enter.
   • Type list disk and press Enter to see all connected drives.
   • Identify your USB drive by its size (e.g., Disk 1) and type select disk X (replace X with your USB drive number).
   • Type attributes disk clear readonly and press Enter.
   • Type exit to close Diskpart, then close the Command Prompt.

3. Modify Registry Settings (Windows):

   • Press Windows + R, type regedit, and press Enter to open the Registry Editor.
   • Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies. If the StorageDevicePolicies key does not exist, you may need to create it.
   • Look for a key named WriteProtect. If it exists, double-click it and set its value to 0.
   • Close the Registry Editor and restart your computer.

4. Check for Errors (Windows):

   • Open File Explorer, right-click on your USB drive, and select Properties.
   • Go to the Tools tab and click on Check under the Error checking section. Follow the prompts to fix any errors.

5. Format the USB Drive (if data is not needed):

   • Right-click on the USB drive in File Explorer and select Format.
   • Choose the desired file system (e.g., FAT32, NTFS) and uncheck the Quick Format option for a thorough format.
   • Click Start to format the drive, which will remove write protection.

6. Use Third-Party Software: If the above methods do not work, consider using third-party software designed to manage USB drives and remove write protection.

After completing these steps, your USB flash drive should no longer be write-protected, allowing you to modify, delete, or add files as needed.