Resize a Windows Partition with the Disk Management Tool

When you enlarge your virtual hard disk, you must also enlarge your guest operating system's partition to take advantage of the additional space.
Verify that your virtual hard disk is big enough to accept the increase in partition size. See Resize a Hard Disk.
Fusion
resizes the guest operating system's partition when you resize the virtual hard disk. If you held down the
Option
key when you clicked
Apply
to resize the disk, you can manually resize the Windows partition. For Windows Vista and Windows 7 or later, you can use the operating system's Disk Management tool to resize a partition.
  1. Right-click
    Computer
    and select
    Manage
    .
  2. Double-click
    Storage
    .
  3. Double-click
    Disk Management
    .
  4. In the list, right-click the partition to expand and select
    Extend Volume
    .
  5. Follow the prompts to resize the partition and click
    Finish
    .
    The partition item in the Disk Management pane displays its new size.
  6. Close the
    Computer Management
    window