Increasing your disk space is a multistep process that depends on the system providing the Vdisk.
Increase the size of the virtual disk where the appliance is installed. It sounds like you may have already done this if you have 100GB available.
Increase the partition size to include the additional space. I usually boot the appliance from a live-cd, SystemRescueCd, and use Gparted to resize & move partitions.
If the appliance was installed with LVM, you will need to extend the logical volume using lvextend.
Clarification Needed
Scott,
Increasing your disk space is a multistep process that depends on the system providing the Vdisk.
The MicroHowTo website has several tutorials that may be helpful. You'll have to Google for specific instructions for your particular setup.
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