VMware View Administrator 5.1.2 - extend persistent disks

[A_F]

Hello,

I have VMware 5.5 and VMware View Administrator 5.1.2 environment.

I want to increase the persistent disks from 4GB to 50GB in VDI XP virtual machine  so I increased in vCenter and then I saw the size of the disk is automatically changed in View Administrator to 50GB.

The problem when I got into the VDI virtual machine and i still see 4GB disk size, so i realized it has to perform extend disk but I can not do it, just do not have that possibility

How do I solve the above problem?

[Gaurav_Baghla]

Is there any error message when increasing the Size ???Administrative right ????????