c:\Program Files\VMware\VMware Workstation>vmware-vdiskmanager.exe -x 40GB "X:\Virtual Machines\MicroXP\MicroXP.vmdk"
  Grow: 100% done.
Disk expansion completed successfully.

WARNING: If the virtual disk is partitioned, you must use a third-party
         utility in the virtual machine to expand the size of the
         partitions. For more information, see:
위와 같이하면 [40GB - 기존의 파티션 크키의 합] 만큼 파티션이 하나 생긴다.