Category: Virtualization / KVM / VirtualBox / xenserver

25.07.2015

i have the following problem… since i updated VirtualBox to 4.3.30, using USB 2.0 will make the VM crash. so i thought, maybe i should update the “extension pack” responsible for giving the VM USB 2.0 support also an upgrade […]

KVM vs Virtualbox – Cloning a Machine
23.07.2015

usually it works like this… the user sets upa Template (like basic WindowsXXX or Linux installation) and clone this template for various purposes (spezialize on…). in KVM it looks like this: su – root virt-clone –connect=qemu:///system –original CloneThisVM –name NameOfClone […]

20.07.2015

gui-way: DO NOT USE ANY OTHER HARDDISK FORMAT THAN THE DEFAULT QCOW2!!! with VirtualBox it’s the same. THEORETICALLY they support Micro$oft’$ HYPER_V_DISK_IMAGE.VHD BUT PRACTICALLY THINGS WILL FALL APART QUICKLY! (broken/corrupted disk image) So just stick to the defaults and you […]

29.04.2015

Qubes OS Applications running in different security domains From Wikipedia, the free encyclopedia For other uses, see Qubes (disambiguation). Qubes OS Developer Invisible Things Lab OS family Unix-like Working state Current Source model Open source (except for Windows Support Tools)[1] […]

29.01.2015

to find out what version of the guest additions are installed on your linux guest, open up terminal type in: modinfo vboxguest filename: /lib/modules/3.2.0-4-amd64/updates/dkms/vboxguest.ko version: 4.1.18_Debian license: GPL description: Oracle VM VirtualBox Guest Additions for Linux Module author: Oracle Corporation srcversion: […]

01.12.2014

# delete old vitualbox install package apt-get purge virtualbox # install & download package wget –no-check-certificate https://www.virtualbox.org/download/oracle_vbox.asc apt-key add oracle_vbox.asc echo “deb http://download.virtualbox.org/virtualbox/debian wheezy contrib” >> /etc/apt/sources.list apt-get update apt-get install virtualbox-4.2 dkms # you might also want the guest […]

14.10.2014

  if your debian-lxde is stuck to a fixed resolution…   make shure that: LXDE auto resize screen VirtualBox Package Installation After setting up your new Lubuntu VM you’ll need to update the sources.list and install several components. Lubuntu doesn’t […]

22.09.2014

Houston… we have a problem… 1x cpu core are not enough… how do we poweroff the VM at midnight, increase the cpu cores 1->2, and power on that box, script-wise?

01.09.2014

Wussten Sie dass die innovative und kostenlose Virtualisierungs-Software VirtualBox ursprünglich aus Deutschland, Weinstadt stammt? … bevor Sie von Oracle 2002 aufgekauft wurde. Logo of VirtualBox OSE, 2007-2010 VirtualBox was initially offered by innotek GmbH under a proprietary software license, making one version […]

13.02.2014

Source: https://en.wikipedia.org/wiki/RAID#RAID_5_in_enterprise_environments “RAID 5 is seriously affected by the general trends regarding array rebuild time and chance of failure during rebuild.[56] In August 2012, Dell posted an advisory against the use of RAID 5 in any configuration and of RAID 50 with “Class […]

19.06.2013

after win7 installation (copying files) has completed, win7 restarts displaying an ugly error with code: 0xc0000225 – means: Boot selection failed because a required device is inaccessible. [youtube=http://www.youtube.com/watch?v=UKO2QlU4he0] PLEASE MAKE SHURE THAT IO APIC is enabled!

17.01.2013

  my windows 7 VMs in virtualbox had TERRIBLE, TERRIBLE network performance… … the prolem seemed to be ip6 + virtio drivers. if you want to use virtio drivers… disbale ipv6 in windows 7. also try disable tcp auto tuning: netsh […]

02.12.2012

when using virtualbox, you sooner or later come to ask “what harddisk format should i choose?” SHORT: GO FOR VDI! EVERYTHING ELSE IS NOT PROPERLY SUPPORTED! Want to know why? Keep on reading:   vmdk: is the VMWare “default” vdi: […]

11.11.2012

in short: the nice fact is that citrix xen and virtualbox can use the same/similar PIIX3 controler, which makes moving VMs between them a matter of “how to copy the harddisk sector wise”. (MAKE SHURE VIRTUALBOX IS USING THIS CONTROLER […]