Compacting VirtualBox’s VDI file size? Rumi, February 8, 2017 Run defrag in the guest (Windows only) Nullify free space: With a Linux Guest run this: sudo dd if=/dev/zero | pv | sudo dd of=/bigemptyfile bs=4096k sudo rm -rf /bigemptyfile Continue Reading
Understanding Virtualbox network interfaces Rumi, March 17, 2016 To create and experiment with all kinds of networks without the risk (or taking the trouble) of creating an actual one. And here is where VirtualBox excels by providing several options for networking out of the box. VirtualBox installs an additional NIC (Network Interface Card) on your host computer to… Continue Reading
Virtualbox Disk Reduce or Disk Compact Rumi, February 9, 2016February 9, 2016 You have to do the following steps: 1. Run defrag in the guest (Windows only) Nullify free space: With a Linux Guest run this: sudo dd if=/dev/zero of=/bigemptyfile bs=4096k sudo rm -rf /bigemptyfile Or: telinit 1 mount -o remount,ro /dev/sda1 zerofree -v /dev/sda1 Or sudo apt-get install secure-delete sfill -f -z… Continue Reading
Set date/time permanently on Virtualbox Guest Rumi, June 6, 2014October 5, 2019 First you need to ssh to the server and be root and then do these step by step: 1. Set the date/time as following format date -s “2 OCT 2013 18:00:00″ 2. Set the proper Timezone for your area- # cd /etc # ln -sf /usr/share/zoneinfo/EST localtime 3. Set it… Continue Reading
VBoxHeadless Running Virtual Machines With VirtualBox On A Headless Debian/ubuntu Server Rumi, August 3, 2012December 4, 2017 I have implemented this on Debian 6 (Squeeze system) with the IP address 192.168.0.100 where I’m logged in as root. Installing VirtualBox To install VirtualBox 4.1 on our Debian server, we open /etc/apt/sources.list… added this line- deb http://download.virtualbox.org/virtualbox/debian squeeze contrib non-free Use appropriate OS source list from https://www.virtualbox.org/wiki/Linux_Downloads Then we… Continue Reading
Virtual USB and VBoxusergroup Troubleshoot on Linux Host Rumi, December 16, 2011December 16, 2011 I faced USB issues on both Virtualbox installation on both Debian and CentOS linux host. I really didn't notice the urgency of vboxusers group in running VBox in headless mode! Anyway, following snippets of texts really did help me out solving my USB problems. All credits goes to the VBox… Continue Reading
VBoxHeadless – Running Virtual Machines With VirtualBox 4.0 On A Headless CentOS 5.6 Server Rumi, December 14, 2011December 14, 2011 This guide explains how you can run virtual machines with VirtualBox 4.0 on a headless CentOS 5.6 server. Normally you use the VirtualBox GUI to manage your virtual machines, but a server does not have a desktop environment. Fortunately, VirtualBox comes with a tool called VBoxHeadless that allows you to… Continue Reading
Install Virtualbox Extension pack in command line Rumi, December 5, 2011December 14, 2011 – Open a command prompt as Administrator : Right-click on “Accessories\Command Prompt” and choose : Run As Administrator. – CD C:\Program Files\Oracle\VirtualBox – Make sure the ExtensionPack is located in the same directory – C:\Program Files\Oracle\VirtualBox>VBoxManage.exe extpack install Oracle_VM_Virt ualBox_Extension_Pack-4.0.4-70112.vbox-extpack C:\Program Files\Oracle\VirtualBox>VBoxManage.exe extpack install Oracle_VM_VirtualBox_Extension_Pack-4.0.4-70112.vbox-extpack 0%…10%…20%…30%…40%…50%…60%…70%…80%…90%…100% Successfully installed “Oracle VM… Continue Reading
Migrate existing Windows installations to VirtualBox Rumi, June 28, 2011June 28, 2011 Windows installations, unlike Linux, cannot easily be moved from one hardware to another. This is not just due to Microsoft's activation mechanism but the fact that the installed kernel and drivers depend on the actual hardware. This document explains the common pitfalls and how to workaround these. We assume that… Continue Reading
Virtualbox on Debian Wiki Rumi, May 27, 2011 VirtualBox is an x86 emulator developed by innotek (bought by Sun/Oracle) comparable to VMware. A version called VirtualBox Open Source Edition (OSE) is freely available as Open Source Software under the terms of the GNU General Public License (GPL). It is a relatively new program and still has some minor… Continue Reading