Check your USB drive or SD card for a lock switch, and ensure it's set to write. Clear the read-only box in a file's properties to remove write protection from individual files. Use the diskpart ...

What is an SD card? Secure Digital is a memory card format developed for portable devices. This type of memory card is used in mobile phones, cameras, and computers. The SD memory card has a "write ...

SD cards have a tiny, and by that I mean almost microscopic, write-protection switch about one third of the way down on the left hand edge (when viewed from the label side). This may have been nudged ...