|I have done just that and cloning is probably the quickest option.|
If the drive came with no software as is the case with mine, there are plenty of free cloning applications avaialble. Just do a google search for partition clone.
Here is the one I used.
When you have cloned a single partition you may need to do a repair to make the drive bootable. However, if you clone an entire disk it will already be bootable,
message edited by StuartS