China DOS Union

@echo off
if exist d: call d.bat
if exist e: call e.bat
if exist f: call f.bat
if exist g: call g.bat
if exist h: call h.bat
if exist i: call i.bat
pause

_______________________________________________________
Content of D.bat

D:
for /f "tokens=*" %%i in ('dir /ad /b') do attrib +h "%%i"
_______________________________________________

The contents of other *.bat are all the same as D.bat, just with different drive letters.

Running result:
Only d.bat is called, and the other bats are not called.

...Experts, please give guidance, why is this happening

Solution. Hey...
When calling d.bat, it has already switched to the D drive directory
Then when calling e.bat, it can't be called. Need to switch back to the current directory

I tried it. No settings are needed at all, and the program can run all!