A virtual machine is an emulation of a guest operating system, running on virtualized hardware within a host operating system.

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Networking scenario for multiple virtual machines on a host

I have a physical machine hosting 3 virtual machines and im using virtualbox. 2 VM's are simple machines that just need to ping each other (lets call them G1 and G2) whereas the 3rd VM has openvswitch ...
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72 views

How do I sync the time on my Linux Mint VM with my Windows 7 host?

I'm running Linux Mint 17 VM using VirtualBox on a Windows 7 (host). I've followed the steps found here and installed all three packages, but I still can't make the time sync with the host.
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134 views

VERR_VMX_IN_VMX_ROOT_MODE when running VirtualBox with libvirt installed

I'm running RHEL 6.4. I had been using a VirtualBox VM to run a simulator, but recently installed libvirtd for a different project. Now I want to run my VirtualBox VM again, but keep getting an error ...
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1answer
348 views

Does running a VM harm the hardware?

I wonder if I'm reducing the life of (or harming in another way) the components of the PC? What if the PC is shared? Other than hard drive space, it should not harm any other operation of the ...
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1answer
283 views

VT-x is being used by another hypervisor

I am trying to set up a virtual machine using Virtualbox: Host OS: Windows 7 Guest OS: Ubuntu Virtualbox version: 5.0.10 Processor: Core i7-5600U But when I try to start the VM I got the following ...
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1answer
3k views

failed to start Virtual Device in Oracle Virtual Box

I was tired to do everything indicated on net. I am using Genymotion to start virtual device but when i start device it's gives me that error Note: When i start virtual operating System Linux it's ...
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1answer
33 views

Automatically start up Virtual Machine and run a script within the VM

I'm looking to automate a certain process. On my host machine, I would like to start up an instance of a VM, and once the VM has loaded, run a command line script contained within the VM. I would also ...
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165 views

Installing VMs in CentOS 7 host from ISO?

I'm trying to install a CentOS 7 guest in a CentOS 7 host, using text only. I'm using simillar commands as: virt-install --name centos7 --ram 1024 --disk path=/var/kvm/images/centos7.img,size=25 ...
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41 views

Hyper-V network adapter lagging, connection dropped

We are using Hyper-V on Windows Server 2012 R2 on physical machine PM1 with one VM hosted. The box has 2 NICs, one for physical layer, second used by virtual switch. From time to time, the network ...
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1k views

No VGA and sound driver installed in XP guest machine in Hyper-v virtualization?

I have a Windows 10 host with 1 XP virtual machine using Hyper-v. However after installing XP for the guest machine, I don't see any VGA or sound driver, so the performance in guest machine is a ...
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2answers
12k views

Error “WinVerifyTrust failed with hrc=Unknown Status” when launching a guest machine on VirtualBox

After working flawlessly for months, all of a sudden I cannot launch guests on VirtualBox. When I attempt to launch a VM, I receive the error: WinVerifyTrust failed on stub executable: ...
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38 views

Vboot vs open source grub?

I'm trying to use vboot from vmlite to boot my computer from a vhd and there are two downloads available the trial version of vboot and the open source grub used in vboot. What is the difference ...
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5 views

How to alter contents of virtual Android device

I need to alter hosts file of a virtual Android device in Windows environment. I tried yaffey tool (3y old), wasn't able to even list the contents.
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45 views

Hyper-V connection sharing kills my host's internet connection after a while

I'm using a setup where I have an ethernet connection on my host (Windows 8.1) set to share with a Hyper-V internal switch, then my VM (Windows Server 2008) connects to that. It works for a while ...
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318 views

Linux windowed GPU passthrough

I've read that GPU passthrough on linux (ubuntu/mint) is possible with the correct types of hardware. I'm looking for a specific use case of passthrough and I'm wondering whether technology has ...
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1answer
102 views

Snapshot a running Docker-Machine on VirtualBox?

Can you take snapshots of a docker-machine with a running machine and containers to save a running state of your containers at a given point in time? I realize the main goals of Docker containers are ...
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1answer
38 views

How to set network interface between VMs using ubuntu

I have a problem related to networking in VirtualBox and I need your help. In the figure, I want to create a small topology which contains a Ubuntu VM (Blue box) running application and 2 VMs (Yellow ...
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1answer
33 views

How do I choose the partition that I want to store my virtual machine on?

I have installed the software VirtualBox on my laptop running Ubuntu 14.04, and I have also created a new partition for which I intend to store the files on. The purpose is to install Windows 7 as a ...
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39 views

connecting jenkins vm to github with webhook, Windows 10

I have a Virtualbox guest VM running with Jenkins, in my Windows 10 host. The VM is exposed through a bridge, and I can access it in my browser at my Wi-Fi interface ip address. I have set up a ...
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91 views

VMWare installation doesn't finish on Windows 10

I am trying to install VMWare 12 on windows but before conclude the installation I see BSOD blue screen on windows 10. I tried to install just the player free 7.0 without success because I see the ...
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87 views

Can the PowerCli command “Get-VM” indicate if a VM is a SRM replica or not

I am working on powercli 5.5 release 1e and i run the following command to get a list of vm under a hypervisor server:- Get-VM now i got many useful info such as :- > powerState Version ...
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1answer
94 views

How can I share a GNOME Boxes VM with another user account?

I am using GNOME Boxes on Ubuntu GNOME 15.10. I have a Windows 7 Virtual machine. I would like to have both of my users have access to the VM. The user which the VM was created on is an ...
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2answers
156 views

Use the same virtual machine into another computer?

Today, I have created a virtual machine (using VMware player) in my local computer and in the future I need a new laptop or regular computer. Is it possible to use the same virtual machine into ...
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1answer
110 views

Trying to setup an SSH connection from an external Internet connection to a VirtualBox guest OS instance

I was having problems creating a SSH tunnel—while I was away from home—back to my VirtualBox guest machine back at my house. I did some research using search engines and looking at numerous sites, but ...
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1answer
73 views

Connect Windows virtual machine to my local network

I had this working for the last couple of years, but today I updated to Windows 10 and I guess the settings got removed and now I have a problem. So I have a private network, 192.168.0.0/24 . I have a ...
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14 views

Transparently execute processes on another machine

Situation: At work, we have an in-house tool for data crunching. When a job is triggered, it starts multiple copies of itself in separate processes and communicates with them in order to crunch in ...
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102 views

What's the purpose of a 2GB+ VMDK file provided in a virtual machine image download?

I wanted to learn Puppet using this book by PacktPub and so I downloaded the Puppet Learning VM v.3.7.1 package that's provided for the book. The VM package comes with the files shown below: The ...
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100 views

Cannot allocate memory QEMU

I'm currently running Windows 10. I tried to use QEMU on my PC to emulate Windows 98 Live CD, everything worked perfectly until I tried to allocate more memory than the default(128MB). I tried to use ...
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120 views

How can I recover access to a Windows 10 virtual machine?

I have a Windows 10 virtual machine (host: VMware Fusion 7.1.2 on El Capitan), and I gave it a PIN on installation. I tried this morning to get into it, and it said on each of several tries that the ...
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1answer
120 views

Unable to RDP onto a VM hosted on another LAN computer

I have a Windows 7 Pro laptop and would like to connect remotely via RDP to a guest Linux VM that is hosted on a Windows 8.1 Home edition PC. Both machines are on my home LAN. I'm using VirtualBox ...
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18 views

Screen Recorder to record Virtual PC,can it be issue?CTRX

I am accessing a system where some tutorial videos are getting played on VLC player.I want to watch those videos again at a later stage as those are concepts and am not getting them. So i have a ...
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21 views

WIndows 8.1 x64 Enterprise returns the BSOD each time on trying to run the VM since I updated the VirtualBox

WIndows 8.1 x64 Enterprise returns the BSOD each time on trying to run the VM since I updated the VirtualBox. The problem gone if I downgrade to the previous version. ...
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78 views

Virtual box problems with a vmdk disk on usb memory stick

I have cloned a disk from virtual box format to a vmdk format splitted in small parts 2 Go. When I start a VM on an usb external hard drive everything is OK. But if I copy the disk on a usb key/stick ...
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17 views

Why does guest OS of VirtualBox doesn't persist the state of the Machine?

I installed Linux mint in VirtualBox. I started the vm normally, and I did some changes in the system. But after restart, guest OS is restored to its initial state. None of my change is kept. Why? How ...
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187 views

fatal: could not read from the boot medium? System halted virtual box

I have downloaded linux mint iso file from online. And I've configured the virtualbox to boot from the iso file. It can start the guest os correctly the first time. But when I try to restart the ...
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1answer
44 views

Unable to rdp after fw change

VM Windows Server 2012 r2 I was able to rdp to this PC without issues until today. While logged in via rdp I was in control panel > firewall and I noticed that there was a message saying 'use ...
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67 views

Cant connect to local MySQL “only” when connected to VPN on VM?

Setup: MySQL installed on my Mac using Xammp Virtual Machine installed using VMware Fusion running Windows XP. I am able to connect to the MySQL database (192.168.0.11) through my VM normally. ...
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34 views

Can't forward real static ip to virtual machine's local ip

I have installed Windows Server 2012 and IIS to virtual machine(NAT connection). I want to publish a web site with my static ip adress. I have a web site to publish and everything is working. My real ...
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1answer
272 views

Windows 10 HyperV no Network on VM

I've followed instructions such as: http://www.download3k.com/articles/How-to-add-an-XP-Mode-Virtual-Machine-to-Windows-10-or-8-using-Hyper-V-00770 and ...
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1answer
52 views

How to join a domain if both Server and User machines are virtual

I am learning Network Administration. In our University lab, everything is setup with different virtual machines connected to each other, And I am trying to create the same scenario at home since ...
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1answer
92 views

Virtual Box - Losing IP in bridged network

I have an Ubuntu VM in which I deployed images and the rootfs for my U-Boot. In the VirtualBox (Version 5.0.2) Settings I have adjusted a Bridged Adapter. In this image you can see my set-up: When I ...
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1answer
107 views

Could not connect remotely to Postgre SQL on Microsoft Azure Virtual Machine

I have a Microsot Azure Virtual Machine running Ubuntu 14 LTS. I installed Postgres SQL and I need to allow remote login. I believe I already configured everything fine. But still when accessing ...
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1answer
26 views

How to keep the state of bootcamp(As in taking a snapshot in VM) while logging back to os

I am in a small dilemma. I mainly work under OSX. But from time to time, I need to use this specific program which is solely designed for windows. I have an iso copy of the program. So under windows ...
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60 views

Can I build a Virtual Machine in VMWare Fusion 7.1 with a lower CPU than the physical host?

I am a Software Tester, I want to test one of our applications in a specific environment. I am using a MacBook Pro with an i7 processor + I've created a Win7 VM with 1024MB RAM and 2 processor cores. ...
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95 views

Connection issue with LXC virtual machines using bridging in VirtualBox

I’m setting up a virtual machine using VirtualBox with 3 LXC containers bridged to port eth0 on the host virtual machine, and everything seems to be working well locally. However, when I try to ping ...
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25 views

Disk space issue of Ubuntu upgrade in Virtual Machine

Does Ubuntu upgrade in a VirtualBox virtual machine take up more disk space? I allocated 10GB disk space and it is now showing just 1.6GB free space. Does it save the previous version of Ubuntu for ...
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28 views

Hyper-V VMs running on a different subnet

I'm wanting to achieve the following and so far struggling. I have a physical server running Windows Server 2012 Standard acting as a Hypervisor solely (running Hyper-V). I want the Virtual Machines ...
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1answer
1k views

Problems installing VMware on arch linux

I'm trying to install VMware but when it gets to "before you can run VMware, several modules must be compiled and loaded into the running kernel" I click install, enter my password, and i get a error ...
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1answer
53 views

Can a Hyper-V host join a domain of a virtual machine domain controller on a different host?

This is a lab environment for a test, I need to join a Hyper-V host to a domain of a virtual machine domain controller on a different host. If doable, what is the prerequisite? Need to be in the same ...
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1answer
56 views

how to install software to a VM using chocolatey

Now I am struggling with install software to vagrant Vm. I took some file from this Link but it didn’t work. After create the vagrant box. I run the vagrant up command to create the VM it worked. ...