Files transfer

Hi

I just bought a used Mac mini (late 2014) with 8gb ram and 1to hd.
Is there a way, a software or a method to transfer the hd from the old iMac (mid 2007) to the new mini, apart from going to a Mac store and pay money?
I did use SuperDuper! to transfer the hd from the iMac to a wired hd, but it won't transfer this hd to the mini.

Thanks

via ehMac.ca http://ift.tt/2uimlwj