Copy contents of one partition to another

Win 7 64-bit PC
I'm try to copy the contents (all files) of my D: partition to my E: partition
(These are separate drives with only one partition each).
All the programs I've tried so far only seem to want to copy the partition and create a new partition on the E:
All I want to do is copy contents, so trying to find software that can just copy contents.

 

My D: drive can no longer be accessed, had made a back of it 2 months ago, so only lost two months of not really important stuff.
if i want to try to copy the last two months of stuff?
Is there a program (non-windows)that might be able to access it?

 

I just figured out I still need to copy all my files from a two month old backup from another drive.
So still need a copy file program.