修改移动U盘或移动硬盘盘符

@echo off&&setlocal EnableDelayedexpansion
echo 正在查找移动硬盘或优盘盘符
for /f "skip=1" %%i in ('wmic logicaldisk where "drivetype=2" get

caption') do fsutil fsinfo drivetype %%i

set /p u=请输入你看到的盘符:
set old=!u!
    set new=j:
    pushd %new% 2>nul && echo %new%盘已经存在! && pause && goto :eof
    for /f %%i in ('mountvol %old% /l') do set "vol=%%i"
    mountvol %old% /d
    mountvol %new% %vol%
    popd
pause