Redistribute free space between partitions

[namaris]

Hello everybody,

i got a MBP 13" since 2011 with OSX Mavericks 10.9.5. The thing is that it has one HD of 320GB partitioned the followed way

A) 70 GB OSX Mvericks (Mac OS Plus, with register)

B) 200 GB DATA (ExFAT)

C) 50 GB Empty (Mac OS Plus, with register)

All i want to do is merge the "C" Partition with "A" to have finally only 2 partitions.

The issue is that through Disk Utilities it doesnt let me edit the "A" particion at all, and so far i tried few things but work

Does anyone know an app or something to make it happen?

Here is a screenshot of the drive (sorry it´s in spanish)

 

[Weaselboy]

The problem is you can only resize the partitions down into empty space, and you won't be able to resize (expand) A because the space below is used by B. Look at this and you will see what I mean.

What you need is an external drive to copy the data to from B. Then remove B and C using Disk Utility. Then resize A by dragging down like in the link above. Then add B back to the end in the remaining free space. Then copy your data from the external back to B.