I extended a virtual disk from 100 to 150 GB using the slider under VMWare Disk/SCSI settings. I then booted Windows 7 and the disk size is correct, 150 GB with 49GB free.
Under VMWare Fusion settings, "Get info", it still shows it as 100 GB with nothing free to speak of.
Tried removing and reattaching the disk, but it comes back as 100 GB.
Also have tried, as suggest in forum the following.
diskpart> list volume
diskpart>select volume 3 (select the number as per your requirement)
diskpart> extend filesystem
I now see that they say it should not contain the page volume, but Windows 7 comes up fine after this, so I'm not sure it that's the problem.