A virtual machine (VM) is a guest Operating System running in a completely isolated environment within a normal host operating system. Modern virtual machines are implemented with either software emulation or hardware virtualization or (in most cases) both together.

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CentOS doesnt know what the internet is

So I have done my share of investigating this problem... I just recently created an CentOS 6 VM on my LinuxMint box using VirtualBox. I left all the recommended values the same upon creation (8GB ...
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136 views

VirtualBox appliance import locks up system

I have a Windows Vista x64 appliance that I am trying to import into the Open Source Edition of VirtualBox on Linux Mint 11 x86-64. The ovf file is 21.3 GB in size. The problem I am having is that ...
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761 views

Red Hat Error Class Code: 49 When Attempting To Install Package

I am a Unix noob. I am currently working on a virtual machine that is running Red Hat 4.1.2-41. When I attempt to install a software package, I get the following error: ...
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1answer
332 views

Will VMX cpu flags increase the speed of virtual machine software , like VirtualBox?

On some CPUs, if I run grep vmx /proc/cpuinfo, I can see a vmx flag under the features entry. Will this feature speed up virtual machine software like VirtualBox?
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Ubuntu installed from mini-ISO under VirtualBox doesn't boot

I installed the mini ISO of Ubuntu 11.04 in VirtualBox. After unmounting the ISO image and booting, I can see only black screen for about two hours? Is it normal? What can I do with it in virtual box ...
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1answer
712 views

Windows 7/Ubuntu 11 dual boot plus VM?

I have installed Ubuntu on my Windows 7 machine, and can now happily dual-boot. What I'd like to do is retain this set-up but be able to use the same Ubuntu set-up as a virtual machine within ...
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5answers
997 views

How to determine why a machine is running slowly?

I log into a linux server (installed as a virtual machine) using a graphical ssh client (securessh). This server runs a tomcat5.5 server where nexus is installed. When I type commands or delete/copy ...
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3answers
437 views

Can libvirt check if virtual machine is fully booted? Can another tool?

I currently have small VM to do certain tests (it has multiple benefits - like testing on another distribution, Fedora 15, as well as running make distcheck without the problem of polluting /). ...
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4answers
856 views

OpenSolaris vs. Debian for Xen Hypervisor VM server

all. I've just purchased a computer that I'd like to repurpose as a lab server. It's a six-core AMD processor with 8 gigs of ram (16 gig max) and a terabyte hard drive. My idea is to hose Windows, ...
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2answers
1k views

Can I get full video capabilities in Arch Linux guest on Virtual Box?

I'm trying out arch linux on my win7 host on a VB and I have it installed just fine, the problem is that when I try to use gnome-shell it goes back to fallback mode because it detects that my video ...
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4answers
497 views

Which Distro/Virtual Machine combination is fast and stable?

For numerous good reasons (you know them best ;-) ) I am willing to switch my Notebook's OS from Windows 7 to Linux very soon. However since I am an absolute Linux beginner I am not committed to any ...
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4answers
282 views

Looking for small distro (to be installed automatically, with g++ and javac)

I'm looking for linux distro only with comand line and i need in it only g++,javac,python. I found Damn Small Linux but it dont have g++ and javac. It should have it out of the box because linux will ...
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1answer
3k views

Slow response time with Gnome shell in Virtualbox fullscreen mode

Today I installed Fedora 15 in a VBox VM to try out Gnome 3. After installing the guest extensions almost everything works fine. Except for the slow response time in fullscreen mode (HOST+F). By that ...
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1answer
2k views

LXC container network/routing issues

I have been experimenting with LXC virtualisation in order to run virtual machines on a dedicated server, but am having trouble setting up the networking properly. I am using veth bridged networking, ...
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2answers
4k views

XenServer how can I shrink the virtual drive of XenServer domU?

How can I shrink the virtual drive of XenServer image?. I gave 300Gb of space for one image (domU) and that was mistake. Now I want to shrink it. How can I do that? The system is already set up and ...
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1answer
202 views

KVM guest machine graphics problem

I'm new to KVM. I use the following way to create and start a guest KVM machine. qemu-img create -f raw centos.img 100G /usr/libexec/qemu-kvm -hda ./centos.img -cdrom /usr/local/CentOS_5.6_Final.iso ...
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1answer
2k views

Xen on openSUSE 11.4

I have done a few installs of openSUSE to use as a Xen dom0 and have not got it working yet. These are the steps I followed: Installed openSUSE 11.4 from Live KDE CD. Installed all updates via ...
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1answer
2k views

Linux - LXC; deploying images with tiniest possible X11

is it currently possible to setup LXC containers with X11 capabilities? I'm looking forward for the lightest available X11 container (memory-wise), hardware acceleration a plus but not essential. If ...
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2answers
18k views

CentOS on HyperV - eth0 not in ifconfig?

I've launched a CentOS install in HyperV and assigned a NIC the same way I've done on an Ubuntu VM, however, the device simply isn't picked up. Only my loopback is found by ifconfig. How should I go ...
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1answer
3k views

What are some alternatives to virtualbox

I have a lot of trouble lately installing on a box that i can't reboot or change the kernel. Is there any other package that supports gre tunnels (if the os supports ) that i can run on linux? ...
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3answers
249 views

Running Linux virtual machine guest on Linux Host

I have a machine running Debian Linux (stable), but I'd also like a Debian unstable box to use as a sandbox to test and develop. Is there an easy way to create a virtualized Debian unstable machine on ...
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2answers
753 views

Virtualization solutions under OpenBSD

I use "OpenBSD as my Desktop OS". What are my choices to run a Linux Distribution, or a Windows (XP/7) in a Virtual Machine? I know that the following apps are not available for OBSD: VirtualBox ...
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2answers
328 views

Multiple dom0's on a single Xen host?

I've recently been researching Xen, and this has come up as a quistion for me. Is it possible to have more than 1 dom0 running on a single Xen host? The reason I ask is that this is very similar ...
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1answer
346 views

Coreboot + QEMU Tutorial Request (Google has failed)

Can anyone point me in the direction of an end-to-end idiot-proof coreboot+qemu tutorial? I'm having trouble understanding how qemu is set up to emulate different hardware (also having trouble ...
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1answer
572 views

AES-NI not passed to guest in Virtualbox

I'm trying to use encryption inside a virtual machine. The problem is that the AES-NI doesn't seem to be passed to the guest virtual machine. I have Vt-x enabled. This is my host cpuinfo: processor ...
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1answer
4k views

Using a LVM partition as a Virtualbox drive

Is it possible to use a LVM partition as a Virtualbox disk? I can't find any option to use a device as a Virtualbox disk, only disk images.
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2answers
923 views

Using mplayer inside kvm/qemu

Is it possible to use mplayer inside kvm/qemu configuration? What video driver should I use? The only driver that worked was sdl and it was super slow. EDIT: I just found out that VirtualBox works ...
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3answers
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How secure is Ubuntu in Virtualbox on Windows host?

I have the most recent version of Ubuntu in Virtualbox on Windows 7 host. How secure will that be? I mean if I get malware on windows how will that affect the Ubuntu system I am working on?
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303 views

Virtual machine hangs when trying to login after beeing idle for som time

I'm using Microsoft Virtual PC 2007 to run a linux virtual machine, but after some time I can't login to it -- not from the instance on the localmachine or ssh in to the machine. Both give the same ...
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1answer
2k views

qemu no boot device found!

I am trying to set up a Linux x86_64 virtual machine on a 32bit Linux computer and I've been told aqemu's Wizard is a good option. I can follow the wizard steps, but when I try to start the virtual ...
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2answers
2k views

How can I install a 64bit Linux virtual machine on a 32bit Linux?

I've got a computer (Intel core i5) with 32bit Linux installed (ubuntu 11.04) and I would like to install a 64bit Linux virtual machine on it so I can test 64bit command-line applications on it.
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2answers
356 views

Choosing virtual machine software on Linux

There are many virtual machine software out there. Even some are included into mainline Linux. What differentiates them, and what criteria should one ponder while choosing one?
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1answer
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What is Dom0 and how can one use it?

I have heard that Xen is now fully included into mainline Linux, and is usable via Dom0. Bare with me: I'm no expert on virtualization, let alone virtualization on Linux. What is Dom0, what is its ...
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1answer
575 views

How to create a “jailed” environment for an application under Linux?

Using Ubuntu 11.04 as a Desktop OS, I want to reach "bigger security" with a "jailing" processes: VirtualBox, Google Chrome, Firefox, VLC, PDF/djvu reader, MP3 player, wine, pidgin, transmission, ...
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6answers
3k views

Install virtual machine as non-root?

Is it possible to install any virtual machine software as non-root user and run it ? Which VM's are possible to be installed with out need of root access ? If it is not possible what would be the ...
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2answers
778 views

Virtualbox, mounting guest directory on host computer

Is there a way to mount a directory residing on my VB guest (linux) on my host (linux)? I know I can do it the other way around with the shared folders feature on Virtualbox, but is there a way to do ...
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2answers
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How do I run 32-bit programs on a 64-bit Debian/Ubuntu?

I have a 64-bit (amd64 a.k.a. x86_64) Debian or Ubuntu installation. I need to run 32-bit (i386/i686) programs occasionally, or to compile programs for a 32-bit system. How can I do this with a ...
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2answers
189 views

Strange encoding in Slackware

I am a student and learning about operating systems, I was modifying a file using vi, when I accidentally did something (I don't remember what) that change the codification/encoding and now this is ...
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1answer
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Reading a filesystem from a whole disk image

I ran these commands: VBoxManage clonehd d6b9f0a5-98df-48ca-83c8-91a0809ec349 --format RAW Debian.raw sudo dd if=~/.VirtualBox/HardDisks/Debian.raw of=/dev/sda5 When I try to mount the partition, I ...
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Resources to learn Linux? [duplicate]

Possible Duplicate: Good Introductory resources for linux I have no experience with any Linux operating system and I just put Ubuntu on my MacBook Pro. What would you professionals ...
5
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2answers
661 views

Xen/KVM/LXC for testing packages

On Debian Stable, I would like to be able to create a new instance of the OS, use apt-get to install some Unstable packages with dependencies, then cleanly delete the whole thing when I'm done. ...
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3answers
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Does LVM impact performance?

I have to migrate a few servers to Linux, and one important aspect that I need to evaluate is that my new host system must have elastic storage capacity. Naturally, doing some basic research, I came ...
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2answers
904 views

Clustering Servers to run one vm

I am looking at clustering about five machines and I wanted to get some opinions about what is the best way to go about it. I'm wanting to run one VM over the five machines, firstly I want to ask, 1: ...
10
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3answers
2k views

What's causing VirtualBox OSE to hang my machine?

I'm using VirtualBox OSE and recently, when I run Ubuntu 10.10 on it, my machine tends to hang, forcing me to hard-reset it (not good). How do I start finding where the problem is? Here's the last ...
5
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2answers
1k views

What are the differences between various VM software?

I have only ever used VirtualBox and I would like to know, for example, what could I be missing from other offerings. I have heard of KVM and VMWare and I'm sure there's others. Short of reading ...
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203 views

Is it 'possible' to transfer a VM to the metal?

How can one take a VM and make it run on the machine?
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526 views

Attach terminal to X desktop running in VM

At home I'm setting up a CentOS 5.5 server that will be running a bunch of KVM VMs. Normally pressing the CTRL-SHIFT-Fn combination on the attached keyboard switches to terminals on the host machine. ...
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1answer
791 views

No core dump on Ubuntu on a Parallels shared folder

I have an application that I'm working on, and I'm having trouble getting a core dump when it segfaults. In fact, I'm having trouble getting real core dump files at all. A simple test case will ...
4
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1answer
496 views

Is PowerVM a full operating system? (And other clarifications.)

I have a few things that I was hoping someone with more experience could clarify in regards to using PowerVM (specifically to virtualise via LPARs AIX). So here is what I think I understand regarding ...
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6answers
2k views

Find out if the OS is running in a virtual environment

Is there any way to find out if the OS i'm running (actually installing) is running in a VMWare machine. I need to disable ntp settings if the automated install is done on a virtual machine but keep ...