maravedi

I needed to increase my Kali VM's drive space from 7GB to 30GB because I ran out of space.  I use VirtualBox, so here's how I increased the size of the virtual disk.

The virtual disk was in the vmdk format, so I had to clone that and change it to vdi so that I could expand it.  Here's how I did that:
VBoxManage.exe clonehd "C:\Users\maravedi\VirtualBox VMs\Kali\Kali-disk1.vmdk" "C:\Users\maravedi\VirtualBox VMs\Kali-disk1.vdi"
VBoxManage.exe modifyhd "C:\Users\maravedi\VirtualBox VMs\Kali\Kali-disk1.vdi" --resize 30720

Next, I had to expand the root partition within the OS.  I found two resposnes on AskUbuntu that, when combined, helped me solve this problem:
https://askubuntu.com/a/116367
https://askubuntu.com/a/109224