Prerequisities:
- Installed free Oracle VM VirtualBox application.
- Installed virtual machine with Lubuntu OS.
Steps
I'm using virtualbox to run couple of my virtual machines inside of the Windows 7 64bit. Two days ago I have upgraded my running Virtualbox software to new version 4.3.4. After upgrade I was not able to start and run any of my virtual machines (Win7 32it, Xubuntu, KaliLinux, Mint) which works fine inside of previous virtualbox version.
After start I have received window with message telling that VT-x is disabled inside of the BIOS. The log file I have found inside one of the machines telling the same:
Using my VirtualBox linux machines (KaliLinux in my case) together with applying a couple of updates brought a problem, where the VB machine starts run out of disk space and I'm not able to update neither extend the system. This could be an often problem once we are trying to save some host system hard disk space using a small initial size of virtual machine disk partitions (12GB here).
The disk file cmd (df) reports:
For XenServer of versions 6.x were removed direct GUI ability to setup auto-start of Virtual Machines after the startup of main XenServer server. This ability have to be setup using CLI (Command line). To do that we have to:
1) Use ssh client for login into your xen server, and become the root