GBB36X RAID Configurer Resize Raid Array issues

[worldmaker]

Installation:
MB: Intel MB GA-X58A-UD5
Gigabyte Raid Configurer: GBB36X V1.17.55

Windows 7 Pro.

After over a decade of reliable use I've just swapped out the old HDD array of 2 x 500gig drives for a pair of 2TB Iron Wolf Raid drives.
RAID rebuilt successfully but I cannot find any way to resize the two partitions on that drive from the original 500gig raid array.

I've looked into the drive through Windows 7 Disc Management and the partitions show up correctly but the new 2TB space does not.
The Gigabyte Raid Configurer shows a pair of 2TB hard drives but no way to change the size of the raid array and partitions.
Using gparted to access from outside also shows only the 500 gig original partitions, and not the rest of the HDD capacity, so no way to extend the partitions beyond the original raid array.

Anyone got any suggestions on a solution?

[worldmaker]

SOLUTION.

I didn't find a "safe" solution so the only course of action was remove and rebuild the RAID.
Make full image backup of the entire PC.
Make full image backup of the RAID hard drive.
Make images of the partitions in the hard drive.

(This is overkill but the safest approach.)

Remove the RAID.
Create new RAID, erasing all original data in the process.
Create copy of the original partitions on the larger array.
Restore the backup data from the original partitions into the new space.

SOLVED.

[shadowsports]

Greetings,
The path you took, although overkill (as indicated) was correct.  The age of the controller, etc contributed to this.  You did exactly as you should have.     Good work