However, this may not be the case if the USB drive you're using is write-protected. As the name suggests, write protection prevents you or anyone else from making any changes to the drive.

USB Write access or USB Write protection is the security feature that can be enabled for any USB Data storage. The main purpose of enabling USB write access is to maintain the integrity of USB ...

Here are the most common causes that don’t let you format your SD card: In a general scenario, you are most probably to face this issue if you have the write protection enabled on your SD card.