Cant expand a partition in vpshere 5

Hi Guys,

I have two virtual disks assigned to a VM the second disk 300GB has two partitions G:200GB 99% used  and H:100GB 84% used as you can see I’m running out of space on G: drive so I increased the disk size to 400GB.

I’m using dell extpart to expand the partition I get an error "unable to extend c drive check disk for sufficient space etc." even though I can see the 100GB unallocated space on disk 2.

I tried to expand H drive it worked fine anyone came across this issue in the past if so how did you resolve it thanks in advance.

I’m running MS server 2003