:: need to install fsum to create recursive md5 hashes
set t=2&if "%date%z" LSS "A" set t=1
for /f "skip=1 tokens=2-4 delims=(-)" %%a in ('echo.^|date') do (
for /f "tokens=%t%-4 delims=.-/ " %%d in ('date/t') do (
set %%a=%%d&set %%b=%%e&set %%c=%%f))
:: echo Year=[%yy%] Month=[%mm%] Date=[%dd%]
copy -r D:\ E:\
fsum /r /t:r d:\ /l:c:\md5_hashes\md5_d_%yy%.%mm%.%dd%.md5
fsum /r /t:r e:\ /l:c:\md5_hashes\md5_e_%yy%.%mm%.%dd%.md5
fc c:\md5_hashes\md5_d_%yy%.%mm%.%dd%.md5 c:\md5_hashes\md5_e_%yy%.%mm%.%dd%.md5