Try this

来源: 于 2005-12-15 18:37:47 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

Start - Run
Input "compmgmt.msc /s"
Computer Management will start.

In the left pane, select "Disk Management".
In the right pane, right-click on the USB drive, then "Change Drive Letter and Paths..."

Good luck!