u disk is written to protect what should be done

First of all, you see if your U disk has a write protection switch, if it is, then turn it off. If there is no error because the internal program logic is wrong, you can use a third-party format tool to format it. If it is invalid, use the mass production tool to initialize it. Due to different formatting tools, the supported U disk types are different. Some tools can't detect U disk after running. At this time, you can use other tools to try to format them, such as MS-Format v1.0.307, USB disk formatting tool. Formatting software such as the Star Shuttle low-level formatting tool. It is recommended to download a U disk virus killing tool USBCleaner to select other functions of the USBCleaner monitor. There is a remove write protection option, first browse the drive letter, then click to remove write protection => OK ~ get it