How to solve VirtualBox disk has run out of space
How to solve the problem “Low disk space on ‘Filesystem root’. The volume has only xMB disk space remaining” when you completely fill a virtual disk in VirtualBox.
(You have to delete all your snapshots first)
Open a cmd terminal and run the following command:
"c:\Program Files\Oracle\VirtualBox\VBoxManage.exe" modifymedium
"c:\Users\mario\VirtualBox VMs\Ubuntu OTAN\Ubuntu OTAN.vdi" --resize 30000
The first path is an executable included with VirtualBox.
The second one is where your VDI actually is.
--resize takes the size in MBs.
Open gpartitioner and resize it.