RAID issue

[Tweaker]

So i am using an Intel ICH10R controller on my motherboard, setup the RAID 5 array, installed the Intel driver but it has given me a wierd setup.

Im wondering why i cant format the other section and when i right click all the options are greyed out.

The RAID array is using 4 1TB drives

PC specs in sig

 

[Tweaker]

Thanks, that worked fine, i did have to delete it before converting. 2.7TB of space now