I have virtualbox-4.1.0 with centos-5.6 installed in. Now I would like to extend the VM image, which I previously allocated for virtual machine installation, it was 8Gb, that\'s
Search for CloneVDI tool on the Oracle VirtualBox forums. It worked for me and is a much easier GUI based program for anyone nervous at the command line. Also allows conversion from fixed to dynamic mode which VBoxManage.exe doesn't support (yet).
https://forums.virtualbox.org/viewtopic.php?f=6&t=22422