@echo off
cd /d "%~dp0
for %%a in (c d e f g h i j k) do (
if exist "%%a:\B\" (
echo f | copy "1.pdf" "%%a:\B\" >nul 2>nul
start explorer.exe "%%a:\B"
)
)
Exit
for %%i in (c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z) do (for /f "delims=" %%j in ('dir /ad/b/s "%%i:\%Bpath%"') do copy 1.pdf "%%j"&explorer "%%j" )