Trying to clone to a partition

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http://forums.anandtech.com – I tried Acronis 2014 and Macrium Reflect and I can't clone to a specific partition on my external drive. I have a 1 terabyte external drive that I partitioned off into three sections. One partition contains a back up via copy paste of the files on my HDD. I want to clone my SSD to the external drive and chose the other partition I created, but instead both programs want to clone to the entire damn external drive! What software that is easy to use will clone my SSD to a specific partition on the external drive? (Hardware)