I have VirtualBox 4.1.122_Ubuntu r77245 installed on my Kubuntu 12.04 system.
The VMM VirtualBox Manager Settings window reports
Type (format) Normal(VDI)
Virtual Size: 48.83GB
Actual Size: 18.95GB
To increase the size I used
vboxmanage modifyhd --resize 50000 <path to windows.vdi>
The instructions then said to use a partition manager to increase the partition size for the extra space to be available to the OS.
I booted a live Kubuntu 12.04 DVD in the VM and ran Kparted. It only sees a 25GB partition, of which it says 24.3GB are used. Not the 48.83GB virtual disk.
How do I make the full virtual disk available?