been a long time since I have done this but you can try this. very simple but should work as long as your not copying your system drive.
open notepad and do a save as: <filename>.bat
type this in note pad without the <>.
copy <drive letter>:/*.* <backup drive letter>:
this should copy the whole drive. Not real sure what will happen the second time. May ask if you want to replace files.
I know theres better batch files out there.
Might look into scheduling a task in windows using the windows backup program or get a third party program.