Answer ：The 128GB U disk is in exFAT format, which was developed later; and XP is an older operating system. ExFAT format is not supported in the early version and the GHOST version with reduced function that is popular on the Internet. But it doesn't matter, you can download an exFAT patch package for XP system online. It can be solved by installing it on the computer. The patch package is small and easy to find.