XP inserts the U disk without a drive letter to display the fault. The

XP system inserts the USB flash drive after installing sp2, which can be correctly identified, but there is no drive letter in the resource manager, and other USB devices (such as mouse) are not faulty, replace U disk test, the same fault, the main reason is that the set drive letter of a network hard disk is the same as the drive letter assigned to the U disk, the solution is very simple, you can refer to the following steps
1. First click the right mouse button " My computer ", then select "Manage" into computer management (as shown)

2. Enter "computer management", click on the left "disk management" option, in On the right side will display all the drive letters on the computer, find the removable disk (as shown)

3. Finally, right click on the "removable disk", select change drive name and path, change the drive letter to the name Yes (the figure shows that the I disk can be changed to the J disk).