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

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How to take advantage of USB3.0 speed for VHD of Hyper-V VM

i created a Hyper-V VM which has it's vhd on a external usb3.0 disk. But the vhd works way too slow. Normally i see around 98Mb/s read/write speed from the hdd if i use it from my main OS. But it is ...
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Windows XP as VM on an old computer

I have this old machine (a Powermate ML5 PC) with these specs: OS Name: Microsoft Windows XP Professional Version: 5.1.2600 Service Pack 3 Build 2600 OS Manufacturer: Microsoft Corporation System ...
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8 views

Setting up a Microsoft Cluster in a virtual enviroument

I currently have three physical hosts (Host1, Host2, and Host3) that are running Win2K8 R2 and each using installed roles: File Services and Hyper-V and installed features: Failover Clustering). ...
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For testing purposes how can SMB be used between two VMs?

For research purposes I want to connect two VMs together through SMB. How can this be done? I've tried using netem but can't seem to get it to work with SMB. So for example I just want to time how ...
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9 views

Call web application on Windows Server running inside VM from Host

I have been given a laptop. Inside this laptop I have a VirtualBox VM running Windows Server 2008. On this Virtual Server I have several sites and databases set up. I created this image to make the ...
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9 views

Hyper-V - how to make network cards appear to Guest OS' as “the same”

Few days ago I transfered physical machine to virtual, so Windows detected a bunch of new hardware. After that I installed integration services, which made it again detect some more new hardware. I ...
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14 views

Mac Host access -> Putty Connection to unix

I'm trying to access in my Mac Host Web Browser to a putty SSH connection to a Linux Server that I have made and that required a tunnel. I can ping from my Mac Host to the Windows Virtual Machine but ...
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23 views

Non-persistence in Windows 7

I have a spare Windows 7 license, and would like to set up a small VM for use as a Jenkins slave. As things can go wrong on build systems, and I'd like to avoid cruft building up in the system, I'd ...
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13 views

How to save changes in a BackTrack virtual machine?

Is there any way to save changes in a BackTrack virtual machine using VirtualBox? I've tried every way, but on every next boot the settings (changes like changing the background wallpaper or such) ...
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15 views

Oracle Virtual Box: No option for 64bit vm's

I've installed virtual box on my pc and I want to use 64 bit operating systems inside my vm. Unfortunatly I can only create 32 bit vms (the 64 option is missing completly). I know it should be there ...
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How to find out a VMs IP address by using VMWare Workstation? Not ipconfig on VM

I am running a VM on VMWare Workstation. Host is Win8.1 VM is debian. How do I find out the IP address of the VM without using the VM? Means: not entering password into debian and executing ifconfig. ...
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Virtualbox, Warpdrivepercentage: Is the same possible with VMWare?

Virtualbox has a function to slow down a VM. Called "WarpDrivePercentage". Question: Is the same pssible with VMWare Workstation?
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running 16-bit code on 64-bit OS, using virtualization

I have a program called Parsonstech Hebrew Tutor, designed for Windows 98. Evidently it was compiled as a 16-bit program, although it is not DOS, and has a GUI (16-bit Windows program). I have been ...
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20 views

How to convert vmware OS X Yosemite virtual machine to virtualbox?

First I've done vmx to ova : ./ovftool --acceptAllEulas /Users/madzohan/Documents/Virtual\ Machines.localized/OS\ X\ Fuse.vmwarevm/OS\ X\ Fuse.vmx /Users/madzohan/Documents/VirtualBox\ ...
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24 views

The disk image is invalid in vmware, however perfect when used in virtualbox

We have a vmware workstation with several windows virtuals and a single linux. There was a power cut and after system has booted up i noticed that windows are working good, however linux virtual ...
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11 views

Error When Resizing Windows 8.1 VM(Host is Macbook Air running OS X 10.10(Yosemite))

I need to resize my Windows 8.1 VM(on VirtualBox) hard drive on my Macbook Air(OS X 10.10) host computer. I did some research and I typed in the following command: VBoxManage modifyhd [UUID] --resize ...
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23 views

Failed to open VirtualBox with hosts Windows 8.1 and guest Ubuntu 14 (64bit)

I'm using Virtual Box v4.3.26.r98988 with an Ubuntu 14 guest. Up until yesterday, everything worked fine, but when I try and start it now all I get is an error message: The virtual machine Ubuntu14 ...
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35 views

VirtualBox is using more processors than allotted

I have a VirtualBox Windows VM configured to use 3 out of 4 processors (see screenshot), but when my computer froze (see description below) recently, I used top and discovered that the VirtualBox ...
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25 views

Are virtual machine resources available to the host?

I know that when I dedicate HD space to the VM that it can’t be accessed by the host OS, but what about RAM and CPU cores/threads? I always thought that if I dedicate 2 cores and 8 GB of RAM to a VM ...
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13 views

Stop guest VM powering off when switching machines?

I have two machines, both windows. I'm using VM Workstation 11 in one. If I have the VM running on one machine, and I switch to the other one for ~5 minutes, it appears as though the VM powers off. ...
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13 views

shell script to generate a log file for VM Backups

we are using PHD virtual backup to trigger backups for VMs and now i want to generate a report of all VMs in a file consisting of VM Name, Date and Backup Time and mail it to my ID at particular ...
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(Virtual Machine) KVM/QEMU Distributed Resources

How do large VM hosting establishments offer Terabytes of RAM? Do they just use really large SWAP files? (over a Network FS of some type)? Or is it that they really have hosts/machines/computers ...
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11 views

Moving ZFS drives from RDM to VT-d

Last year I built a simple NAS box using a Napp-it vm on ESXi. I bought a server(ish) board, ECC RAM and 4 x 4TB drives to store the data. Since I'm new to sever building I mistook "Virtualization: ...
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25 views

Convert VMDK to LVM

I'm trying to migrate a VM from my laptop to my XEN server. First I used $ vboxmanage clonehd my-disk.vmdk -format RAW mydisk.img Copy to the server and do the following $ kvm-img my-disk.img ...
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VirtualBox VMs turn off randomly [closed]

Yesterday after I deleted my old AD user account and replaced it with a local administrator account all 70 (35 of which are currently running) of my VirtualBox VMs disappeared from the VM list in the ...
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Hyper-v error: Virtual Machine could not be started because the hypervisor is not running

Sometimes ago, I used some virtual machines like VMWare and VirtualBox that worked well on my machine. Recently I wanted to use Hyper-V but I couldn't. I googled the issue but I didn't receive any ...
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1answer
12 views

HyperV: Best way to sharing Host Partition with all Guest Machines?

I'm trying to set up a lab environment. I have a guest with 1 2TB harddrive 16gb ram running Server 2012R2. My host partition is is split like this: C: 200GB HyperV (F): 600GB (this only contains ...
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15 views

VirtualBox Network confusion?

I'm trying to adjust my VirtualBox guest network in order for my guest O/S traffic look like its coming from my Host. Can I do this with NAT? Here's a simpler outlook on what I am trying to achieve ...
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28 views

How to make Windows 7 Virtual Machine get an IP address dynamically from another VM in the same VMware workstation 9

I am running an instance of VMware workstation 9, in which I have installed Windows Server 2012 as one VM and Windows 7 as another. I want the Windows 7 VM to get an IP address dynamically from the ...
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In Parallels, can I view the my Windows 7 VM desktop without turning off the coherence view mode?

I'm new to using Parallels and I really like using the coherence view so I can have windows applications floating anywhere in my OS X environment. But I have the need to check the windows desktop ...
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Making a host-only connected virtualbox guest a part of the hosts apache or nginx network

I have an instance of Apache running that hosts a very basic web presence. like this. This URL is resolved to the server host where it serves some simple static content. On this host, there is a ...
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24 views

No Machine: physical device forwarding

Is there anyway on No Machine to allow the server machine to have access to client devices, such as the webcam and wireless card of the viewing machine? I can only find the reverse process online. ...
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virtualbox (osx host and linux guest), only shared folders with read/write work, those with read only permissions do not

I'm using virtualbox (with osx as the host and linux, debian 7, as the guest). Shared folders with read/write permissions set to automont work fine. But if I set the same folder as shared and ...
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53 views

Increase screen resolution in VirtualBox guest without VirtualBox guest additions?

Without VirtualBox guest additions installed, the only screen resolution is 640x480: $ xrandr xrandr: Failed to get size of gamma for output default Screen 0: minimum 640 x 480, current 640 x 480, ...
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54 views

unable to boot up windows 8.1 UEFI on VM in VMware workstation 11 in windows 8.1 host

I downloaded VMware Workstation 11 trial for windows 8.1 and the official windows 8.1 ISO, and made a virtual machine with UEFI firmware, a virtual SATA harddisk and virtual SCSI CD/rom drive which ...
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9 views

Arch Linux: My adapter resets every 5 or so minutes, for an unknown reason

I'm running an Arch Linux 64-bit VM using Oracle's VirtualBox. Everything is working fine, except my adapter keeps resetting every few minutes. I don't know what's causing this. I get a message ...
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19 views

vmWare Workstation - unable to drag and drop or copy and paste

I've setup a CentOS 7 VM on my Windows 7 laptop. In the VM settings I have both boxes checked for "Enable drag and drop" and "Enable copy and paste" and yet I'm still not able to move over even a ...
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unable to access internet from client VM which is connected to another Ubuntu VM acting as a router

I setup 3 ubuntu VMs on virtual box with the following configuration VM1(acting as router with 3 interfaces): interface1: bridged to wireless interface on host system(ubuntu 14.04) for internet ...
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27 views

Different subnets for Virtual machine & host?

If I configure my VM to be in a different subnet from the host, Is there any way to make the host reachable from the VM? I do not expect the host to handle the packets, I just want to know whether in ...
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Why won't Metasploit open a Meterpreter session?

I'm running Kali Linux in a VirtualBox VM. After starting a malicious local web server using Metasploit, I try to access it on my other PC. But, after connecting to the local IP, my browser just ...
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1answer
26 views

running a virtual machine with Cent-OS but problems occur

I have a windows 7 OS on my desktop and I have VMware Player installed. I did not use easy install when I created a VM that has Cent-OS installed. When I reboot the VM, I tend to get stuck in this ...
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13 views

Can the Host be the AD for the VMs?

I just bought a new desktop specifically for running VMs, testing and learning the microsoft stack (server, sql, SharePoint, etc). This PC is dual booted with 8.1 and Server 2012 R2. I am wondering ...
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23 views

Connect USB 3.0 to Linux Guest in VMWare Player

I need to connect a USB 3.0 external hard drive to my Ubuntu 14.0.4 guest. USB 2.0 devices work as expected, but USB 3.0 devices do not appear. I have enabled USB 3.0 in the virtual machine settings, ...
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Distributing workspaces through VM images

I want to get a dev workspace up and running on a local VM and then save its state and distribute it to others to work on the same workspace. How is this possible with VMware or virtual box?
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Virtualbox bridged networking on OVH server

I can't get that working even thou I configured it few times on other machines. Probably it's problem with something ovh-specific, or maybe I just twisted myself hard enough by now. Clean install of ...
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VM sharing over network

I have an HP ProBook 4530s laptop upgraded to 8GB of RAM. I also have a Pentium III PC with 1GB of RAM. On my HP ProBook I have VirtualBox installed with some virtual machines (Windows XP, PC-BSD and ...
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27 views

Create a virtual machine along with a dual boot (win 8.1 + ubuntu) machine

I wanted to know can i create a virtual machine on a dual boot machine? At present, I'm running on windows 8.1 along with ubuntu 14.04. Now I require a virtual machine (one more pc to be specific) ...
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Troubleshooting access to a Parallels virtual machine from another computer on the same network

I have PC1 (local IP address 192.168.1.37) running a CentOS virtual machine with a “bridge mode” Ethernet connection. TheCentOS virtual machine has an IP on the same network (192.168.1.33), Internet ...
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Assigning Static IPv6 address to Ubuntu VM in Vmware

I'm trying to assign a static ipv6 address to a ubuntu vm running on VMWare. At the moment, I've got a single network adapter, a NAT. /etc/network/interfaces is configured like this (following this ...
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Using TAP adapters for network bridging/connection?

Using virtualbox with a windows 8.1 host, I am using TAP adapters in the host to bridge networks with mixed and (to my eyes) inconsistent results. A few scenarios I have tried: ...