Virtualization is the process of using software to emulate an entire computer, in which "guest" operating systems can run.

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Why KVM is called Kernel-based Virtual Machine?

I want to know how KVM stands for Kernel-based Virtual Machine. Is there any reason behind? Is it due to "OS" work on kernel position i mean ring 0 or Level 0? Is my assumption is correct or not? If ...
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534 views

The virtual machine could not be started because the hypervisor is not running

I can not start Hyper V virtual machines. I am getting following message: [Window Title] Virtual Machine Connection [Main Instruction] The application encountered an error while attempting to change ...
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53 views

Deleting partitions [meant to be dual-boot] or a fresh re-install [Virtualization]: Centos 7/Win7

I appreciate any advice given to resolve this particular dilemma. The Background: I need to have Macromedia [Adobe] Dreamweaver and as such a copy of Windows somewhere. My main system is Centos 7.1. ...
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3answers
2k views

Virtualbox Windows graceful shutdown of guests on host shutdown

I am trying to find a solution to gracefully shutdown any guest VMs running under VirtualBox Windows when the host computer is shut down or restarted. It seems that the safest option would be to ...
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1answer
148 views

guestfs-xxxxxx VMs appearing in LibVirt (virt-manager)

I have a KVM+LibVirt based hypervisor running on Fedora 22. I use virt-manager for managing the VMs over SSH. For some reason I see "guestfs-00kxipwaewnkoq92" VMs appearing and disappearing at ...
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31 views

Migrating VMs in VMware Player to VMware Workstation

Is there a way to migrate the VMs created in VMware Player to VMware Workstation ? My PC had VMware Player previously on my personal laptop, and I have 3 VMs created. I recently installed VMware ...
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8k views

Is it possible to install Windows 10 as the host OS and as one or several guest(s)?

With a single license of Windows 10, is it possible to install the OS at the same time as: The OS of the host machine (the non-virtual machine) The OS of one or several guest system(s) In such ...
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222 views

Virtualization with UEFI'secure boot feature

I'm interested in the notion of emulating digital signature checks in virtual machines—the host can be booted without hardware-based digital signature checks, which can be moved to the VM, and the ...
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19 views

Networking between two VMs via host

I have two virtual machines in VirtualBox. I would like to do networking between them via my host OS. In this case they should interract only via my os. I tried NAT but I can't ping then both my OS ...
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24 views

Memory not releasing after shutting down vm in Xen-4.5

I installed Xen-4.5.0 on a server with CentOS 6.5(v3.2.30 kernel). All works well except when I shutdown a vm, then xl li shows that the vm's memory is not released and physical memory becomes less ...
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39 views

How do I open a VM I received in VirtualBox?

A lady "put together a virtual machine" that was supposed to include a certain software and related packages. I was given a folder of files (vmdk, log, vmxf, plist, vmsd, nvram, and png files) and ...
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693 views

Windows doesn't detect virtualization

CPU: Intel Core i3 3220 Motherboard: P8B75-M LX (BIOS version: 1403, final) OS: Windows 10 Education 64-bit Note: I have screenshots including BIOS settings but I can't add because of reputation ...
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4answers
2k views

Force virtual machine to only use VPN connection?

Here's what I have: Mac OS X 10.10 - running VirtualBox and acting as an OpenVPN client. This works just fine on the VPN and is intended to be my host machine. There is also a WiFi connection on this ...
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0answers
153 views

How do I compress or compact encrypted virtualbox disk image

As I have created a Debian VM inside VirtualBox by encrypting their partition. So that the OS must be running in an encrypted partition. Although while creating a disk image(VHD), I had given for ...
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657 views

Windows 10 upgrade with hyper-v missing “Local Area Connection - Virtual Network”

I upgraded Windows 8.1 to Windows 10. Prior to the upgrade, I had Hyper-V running, and sharing the wired Ethernet adapter. After the upgrade, all of the virtual adapters were disabled (and named "...
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66 views

Why can't I open applications that I drag and drop onto OS X Guest VM?

I am running OS X Yosemite. I have a guest VM (Yosemite), that I would like to copy applications onto. It has the same appleID as my host VM. I drag and drop the application from the application ...
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2answers
171 views

How do I virtualize a physical machine, and be able to put the image back on the real machine?

Can I convert a physical machine running Windows (XP, 7, etc) to an exact copy virtual machine, make modifications on it and be able to put it back on the physical machine if I need it? The OP adds ...
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1answer
5k views

Oracle VirtualBox - Unable to update to Windows 10

I'm using Oracle VirtualBox 5 and my virtual Windows offered an Update to Windows 10 today, but it stops saying: VirtualBox Graphics Adapter The display manufacturer hasn't made your display ...
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1answer
148 views

Xen VPS with 2 IPs from 2 different subnets

I am new to Xen and I am trying to understand how to add 2 different IPs on the same guest VPS. First, I am going to explain my node setup, which is a physical server with 32GB RAM and 2 NICs on it. ...
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1answer
189 views

Running a Virtual Machine and Hypervisor on the same machine

I've got a desktop and a laptop computer. Both run Intel hardware. I mainly do word processing, programming, watching videos and surfing the Internet (I don't play computer games). I would like to ...
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1answer
17 views

VM engine that reuses installed OS

I am running a tripple-booting MacBook Pro. It boots between Ubuntu, Mac and Win7 (likely going to drop Win10 on it asap). Now I would like to do tasks in my Mac, my primary OS, while pulling updates ...
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4k views

Operating VirtualBox 5 on old Pentium 4 32bit CPU with 4GB RAM

Trying to operate VirtualBox 5 on old Pentium 4 32bit CPU with 4GB RAM. But spinning up 32bit Linux/Ubuntu VMs is so slow. Have adjusted allocation of RAM and hard drive settings and still too slow. ...
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95 views

VirtualBox networking (inception computing)

I am new to world of networking and now I am trying to connect 3 PC`s together. I have windows 7 host that runs Ubuntu64-bit server guest, that runs ubuntu32 server guest. Win7- Host Only network (...
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198 views

KVM or Xen for VGA Pass-through

I'm in the planning phase of setting up a personal virtualization server. One of the virtual machines I want to setup is a Windows box with Steam. Ideally, I want to stream higher-end games to my ...
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6 views

Fault Tolerance in Virtualized Servers

I have read about virtualization though I don't have real life experience. One of the ways to achieve is by installing Hypervisor in a server machine and have management software in admin's machine to ...
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38 views

VPN on guest machine only

I have a Windows 2008 R2 server that does a fair bit of media transcoding, and serves the house via Plex server. I am looking at making a VM guest (windows 7 or 8) that will have a VPN client ...
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1answer
49 views

Access files in virtual machine from virtual disk files?

I was using vmware workstation, but I don't have a valid key anymore. I have files and data in there that I need and would prefer not to pay $250 to get a new license. Is there a way to access my vm ...
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1answer
372 views

VMware vSphere ESXi 6 and Horizon View 6 with PXE clients

I have used VMware vSphere ESXi server 6 trial with vCenter server and vSphere client 6 on Windows Server 2012 R2 locally and I could successfully get them to work, but I want to go one step further ...
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1answer
931 views

Providing 512MB of video RAM with VirtualBox

I'm attempting to use VirtualBox to play a game on a Windows guest machine, running under an OSX Mavericks host with 512MB of video RAM. The game requires 512MB of video RAM (although it doesn't do ...
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1answer
779 views

Virtualbox: deleted snapshot, vm won't boot

The problem I accidentally deleted the snapshot file located at <virtualbox-folder>/vms/<vm-name>/Snapshots. When I try to start the VM (which the .vdi file is intact), the following ...
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422 views

Save qemu VM state like in Virtualbox

I am used to the Virtualbox "save machine state" exit strategy, which is a handy way to let the host reboot without shutting down the vm. I recently switched to qemu because of its VT-x in VT-x ...
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192 views

OpenVZ fails on container create (Unable to get appcache tarball name)

I have OpenVZ installed on CentOS 7.1. after i execute vzctl create 101 --ostemplate debian-7.0-x86-minimal i get command /usr/sbin/vzpkg exited with error 8 Unable to get appcache tarball name ...
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312 views

Effective virtualization without VT-d

My configuration: Intel i5 M 460 processor (doesn't have VT-d). 4GB of RAM enough memory on HDD and SSD for everything I need. :D I'd like to make few virtual machine OS which I want run smoothly ...
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256 views

Trying to install PFsense on Proxmox…lost

So I've been bashing my head against my desk for the last couple of hours trying to figure out how to properly set the network interfaces for proxmox. I'm looking to do something really simple where ...
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394 views

PCI passthrough KVM

I am trying to passthrough my Tesla K40m GPU accelerator to a qemu-kvm virtual machine via the VFIO driver on Ubuntu 14.04.2. I downloaded all drivers and CUDA libraries, and I compiled all sample ...
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How can multiple Linux distros be run simultaneously & equally resourced on screen in a VM?

What is the easiest and/or best way to run several lightweight Linux OS's simultaneously in separate display windows, in a reconfigurable virtual hardware environment, while (and this is important) ...
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36 views

Can I connect to an external-HDD-based Hyper-V VM from any computer?

If I create a VM on an external HDD using Hyper-V, and now want to connect to it from a different computer using Hyper-V on that second computer - Can that be done, or might that corrupt the VM? If ...
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1answer
415 views

How to add an additional drive to an existing ZFS RAIDZ-1 in Proxmox?

I've a ZFS installation in Proxmox, in particular a RAIDZ-1 file system, for testing purposes (before going on production with this setup) I've added a new drive to the machine, but I'm blocked on ...
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1answer
198 views

Customize and sysprep modern.ie virtual machines say for VirtualBox?

Has anyone done this or know if possible and the steps? MS has VMs for testing IE on modern.ie site. They're clean base images one extract and imports into VM software of choice like VirtualBox to ...
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315 views

MAC addresses for virtual machines

As I understand it, MAC addresses are assigned to every physical device by the manufacturer. By extension, how are MAC addresses assigned to virtual machines - for example if I create a new virtual ...
2
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1answer
221 views

how do I copy large datasets between two VirtualBox virtual machines?

I have two separate CentOS 7 virtual machines running in VirtualBox that is installed in a Windows 8.1 host. How do I transfer large amounts of data from one of the CentOS 7 virtual machines to the ...
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1answer
216 views

Move physical Snow Leopard installation into VirtualBox

I've got a physical installation of Mac OS X 10.6.8 (Snow Leopard) happily running on my MacBook Pro. I want to move this install (not install a fresh copy of OS X and moving my data, move the extant ...
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133 views

IOV / SR-IOV / MR-IOV for non-network hardware

I've been looking for real-world examples of this for a long time -- mainly because I'm trying to decide whether to restrict my build-options to using only components (chipsets, processors, ...
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1answer
190 views

How to access multiple virtual webservers via one public ip

I'm preparing to configure a remote server, located in some data center. This server will have single public IP assigned. This server will have a hypervisor of some kind (KVM or Xen) installed. ...
2
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171 views

QEMU CPU Emulation Capability

Is it possible to emulate any/all Sandy Bridge CPUs using QEMu? Specifically, I am trying to get something akin to an Intel Xeon E5-26xx (a SandyBridge processor) running on hardware employing a ...
0
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1answer
153 views

Installing Hyper-V server on same partition as OS (windows 7)

I need to do multiple Internet Explorer version testing and one of suggestions is to install Modern.IE. To do this one needs visualization running. I have downloaded Remote Server Administration Tools ...
2
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1answer
9k views

VT-x enabled in BIOS, but disabled in Windows 7

I've been running VMWare Workstation 11, with 32 & 64-bit guests just fine but I haven't run in in a few months. I tried starting it up again and I get: Blockquote Binary translation is ...
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578 views

how does vswitch work with the physical nic in vmware?

It is known that VMs, through their vNIC connect to vSwitch which is in turn connected to the physical machine or ESXI host's network adapter (vmnic). The vmnic is then connected to an actual L2/L3 ...
3
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1answer
414 views

What is the difference between Docker and Virtual Box?

I have used Virtual Box alot on my mac for Linux images. What would be the advantage of moving to Docker? So I would like to know what the difference between Docker and Virtual Box is?
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What does it mean when a virtual machine can only run on x86 hardware? [closed]

I am learning about different kinds of virtualization. As I learn about this concept I am often times presented with documentation that says the virtualization software "requires x86 processors". I ...