Category Archives: Virtualization

How to set your VM to auto start at system startup in VirtualBox 4.2 on Ubuntu 12.04

There is a handy feature in VirtualBox 4.2 that lets you configure your VM to be automatically started every time system starts up. Below you can find the steps needed to configure your VirtualBox installation to achieve that on Ubuntu … Continue reading

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Installing VirtualBox (4.2) and phpVirtualBox (4.2.4) on headless Ubuntu Server (12.04 LTS)

Ubuntu 12.04 LTS Server is a headless server and does not have X-Window, therefore phpVirtualBox is needed to manage VirtualBox. There are two steps covered here in this post; one for instaling Virtualbox 4.2.4 and the other one for installing … Continue reading

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Virtualbox – VBoxManage: error: Adding machine ‘Ubuntu-VM’ to the autostart database failed with VERR_ACCESS_DENIED

In Ubuntu 12.04 LTS, I tried to configure Virtualbox 4.2 to start my VM automatically when the system starts up. However, I got an error message as below after following the instructions in chapter 9.24.1 in Virtualbox User Manual: VBoxManage: … Continue reading

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Minimum privileges / permissions required for virtual machine user related tasks and assigning them to roles in VMware vCenter 4

It can be very frustrating or even confusing when dealing with privileges / permissions and roles in VMware vCenter because of hierarchical inheritance of permissions. After some point, you forget about the security and give the users more permissions than … Continue reading

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Freeze or stall while connected to virtual machines with Windows 2008 R2 or Windows 7 through console on VMware vSphere 4 client

On VMware vSphere client, while you are connected to virtual machines with Windows 2008 R2 or Windows 7 operating system using console connection, guest operating system can freeze or stall for a long period of time so that it doesn’t … Continue reading

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