How to make it go through certain folders(ex. 1-8 on the drive E:) and their trees and copy them on F: in the batch file(my doesn't work):

```
set drive=E:
for %%a in (1,2,3,4,5,6,7,8) do (
  set folder=%%a
   for /R "%drive%\%%a" %%b in (*) do (
        copy "%%b" %drive%\%folder% 

```