it looks to me like that mini tool is using basic mbr according to the picture and it needs to be using gpt.
top 2 lines in mini tool picture.
first drive:- basic mbr 931.51GB
second drive:- basic mbr 3.64TB
personally i wouldn't use the mini tool and just use windows disc management and see what it now shows.
it should now show the full drive can be partitioned as a single partition if you've run the unlocker utility phil linked to and it fixed the problems of the mbr limitation with larger drives.
what operating system are you using? not using windows much myself i can't remember if windows 7 is gpt capable or if it needs a driver update so it can create and use gpt partitions.
did a quick google search and found this.
Delete all partitions -
Then right click on the "Disk #" box on the left side of the Disk Management Window > and select "Convert to GPT Disk"
Then create the new partition using the Wizard.
so in disk management just delete the 2 shown partitions on the new 4TB hard drive and follow above then it should now show a single gpt partition.
Edited by terry1966, 01 April 2016 - 10:48 AM.