Category: virtualbox / Virtualization / xenserver


this seems to be a result of updating VirtualBox without updating the extension… the version of extension and VirtualBox need to match oterhwise this error. VERR_PDM_DEVHLPR3_VERSION_MISMATCH 0x80004005 download the extension matching your version of virtualbox uninstall any older version […]


E_INVALIDARG 0x80070057 Cannot register the DVD image ‚/usr/share/virtualbox/VBoxGuestAdditions.iso‘ {b058bc48-c451-4cff-9db0-d01c70e99c28} because a CD/DVD image ‚/usr/share/virtualbox/VBoxGuestAdditions.iso‘ with UUID {bb9b13c5-f90f-4589-b212-8b9e01f118f5} already exists. Solution: open the .VBOX file with wordpad: […] <DVDImages> <Image uuid=“{b058bc48-c451-4cff-9db0-d01c70e99c28}“ location=“/usr/share/virtualbox/VBoxGuestAdditions.iso“/> […] Delete all entries between <DVDImages> and </DVDImages> lines. After deleting […]


„The heart of the problem is that Hyper-V locks exclusivly the virtualization feature(s) VT-x of the CPU(s), and will not share them with other software. VirtualBox can be configured to play nice (as much as technically possible) but also require […]

Was macht eigentlich ORACLE?

Jeder kennt Steve Jobs (now dead) – aber wer kennt schon „Larry“ Ellison? 😀 Oracle hat 2010 die Firma „Sun Microsystem aufgekauft“ und damit OpenSource Technologie wie Java, VirtualBox und MySQL eingekauft. Lawrence Joseph „Larry“ Ellison (born August 17, 1944) […]

24.04.2016 As you can see it pretty much looks like Acronis True Image… even the color Blue is similar. The compression is pretty good. a 7.21Gbyte Windows C Partition is downsized to 3.5 Gbyte in a full backup.   […]


first you will have to share the folder (Machine -> Settings -> Shared Folders -> Click on the green Plus on the right side) mkdir /mnt/DATA; # create mount point mount -t vboxsf DATA /mnt/DATA; # mounts the shared folder […]


this was tested on: Linux laptop (Core2Duo T2050) 3.16.0-4-686-pae #1 SMP Debian 3.16.7-ckt11-1 (2015-05-24) i686 GNU/Linux apt-get install linux-headers-$(uname -r); # install linux header files aptitude update; # aptitude can resolve conflicts better than apt alone aptitude install libssl0.9.8 libpython2.6; […]


Climate Change is affecting all of us. -> „How do we get more detailed information?“ Computer Simulation -> Projects Since was launched the combined computing power of its users has allowed scientists to carry out […]


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 […]


usually it works like this… you setup a Template (like basic WindowsXXX or Linux installation (like a stem cell)) and clone this template for various purposes (spezialize on…). in KVM it looks like this: (WHICH IS TOTALLY CONFUSING FOR ME) […]


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 […]


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] […]


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: […]


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