You are required to extend your disk partition. Please follow these steps: For Windows 2008: – Start -> – Administrative tools -> – Computer management -> – Disk management -> – Right click on “Disk management” -> – Refresh -> – Right click on Drive C: -> – Extend Volume -> – Next -> Next -> Next For Windows 2008: – Start -> – Administrative tools -> – Computer management -> – Disk management -> – Right click on “Disk management” -> – Refresh -> – Right click on the disk “Unallocated” -> – New simple volume -> – Next -> Next -> Next -> Next -> Next -> Finish