Expand Windows 2003 VM’s (Hyper-V ) System Drive (C Drive)

1. Shutdown VM

2. Expand VHD file in VM’s properties (in Hyper-V)

3. Switch on VM and check drive expansion is reflecting in VM’s Disc Management

4. Switch of VM

5. Mount VM’s VHD file in Hyper-V host - Disk Management>Action>Attach VHD

6. Expand VHD using Hyper-V host’s Disc Management MMC

7. Make VHD offline and then unmounts VHD

8. Start VM, now drive must showing added space.