QEMU (short for "Quick EMUlator") is an open source machine emulator and virtualizer.

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How to forward usb port to guest OS using qemu

I have lots of usb devices and I would like to connect them to guest os. Currently I'm forwarding one device at a time. $ qemu-system-x86_64 ... -usbdevice host:xxxx:yyyy I would like to give ...
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2k views

Virtualize an existing windows 8.1 installation on arch

I have the following setup: Intel i5 4570s SSD for os sda1: EFI boot partition sda2: ext4 with arch installed sda3: swap sda4: microsoft reserved sda5: ntfs with windows 8.1 installed HDD for data ...
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619 views

nova-compute libvirt x86_64 emulator Error

I was trying to install openstackin Ubuntu12.04 server. I find that Nova-compute is not getting started and the error is the below. I followed some of the suggestions in various forums, but nothing ...
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159 views

How to bootstrap a MIPS NetBSD iso in qemu?

I'm trying to bootstrap a NetBSD 4.0 iso in qemu, but am not having much luck. My host computer is running OS X, and I successfully installed qemu with homebrew, but have been unable to bootstrap the ...
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QEMU: weird display output when install debian on mac osx

I got weird display when I tried to install debian on osx 10.9.1 qemu-system-i386 -hda debian.img -cdrom ~/Downloads/debian-testing-i386-netinst.iso -boot d QEMU is the newest version brewed from ...
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290 views

How to start QEMU on Windows with monitor enabled?

I've downloaded the latest 64-bit version of QEMU for Windows and it installed fine. However, I now have problems switching to Monitor mode when trying my code. The documentation says Ctrl-Alt-[1, 2, ...
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473 views

“ACPI\QEMU0001” unknown ACPI device after Windows 2008 install with libvirt

After installing Windows 2008 in a libvirt virtual environment (command below for reference), I'm stuck with an "Unknown device" in Device Manager. The Hardware Ids show ACPI\QEMU0001. I tried using ...
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Swapping floppies in FreeDOS+Qemu

I am trying to replace a floppy inside a qemu machin running freedos 1.1. I remove the old floppy and inserts the new using change floppy0. Now when I dir A: nothing has changed. If I try to run a ...
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113 views

Unknown OS hostname and product in virt-manager

I'm using libvirt on a Fedora 19 host, running various Linux guests with QEMU and KVM hypervisors. Using the virt-manager GUI, when I look at the guest Overview screen, in the Operating System ...
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531 views

QEMU and the Raspberry Pi

[I re-titled this for posterity, since it does turn out to be somewhat raspberry-pi centric] I'd like to try QEMU as an alternative to cross-compiling. I'm using v. 1.0.1 on fedora 17 [later: same ...
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Can QEMU be used on Mac OS X to emulate a one-core CPU (preferably only the CPU)?

Can QEMU do this kind of emulation? On Macs there's no an easy way to set CPU affinity, so this could an interesting workaround for the older programs that don't work well in multi-core environments.
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pulseaudio, in a KVM virtual machine (as root) and your desktop (not root) playing audio at the same time?

How do you get pulseaudio to play sound in a KVM virtual machine (running as root) and your desktop apps (not running as root) at the same time? It seems that by default, it will only play sound for ...
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113 views

-kernel option like in QEMU for BOCHS

I am working on creating my own kernel using C/Asm. I have always used QEMU as my emulator mainly because I can specify -kernel and it boots the kernel directly without a boot loader. I wish to switch ...
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547 views

Network setup for web development on KVM guest with host using wifi

I've a laptop running Linux connected to a LAN using wifi. I've used virt-manager to create a KVM/QEMU VM and installed Ubuntu on that. As expected, it can connect to the Internet to download updates, ...
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2k views

Cannot open SDL support on Qemu

When I compile qemu for arm platform, I configure as follows: ./configure --cross-prefix=arm-linux-gnueabi- --target-list=arm-softmmu --enable-kvm --enable-sdl --static But get errors below: ...
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784 views

Running FreedomBox in Qemu

I wanna run the latest FreedomBox image on my Ubuntu laptop. The FreedomBox image is for DreamPlug, a 1.2 GHz Marvell Kirkwood 88F6281 SoC (ARM9E), and my Ubuntu is v12.10 (3.5.0-17-generic i686). ...
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618 views

Virtualized guest vs host CPU usage

I am using qemu with kvm as my hypervisor. I am running a gentoo guest on an ubuntu host. The guest is being given a single processor. When I run a compute intensive job (say empty-loop) I get almost ...
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127 views

Making qemu-based Marss simulation deterministic

I am using Marss cycle-accurate simulator, which uses QEMU. It is a full system simulator and gives both user and kernel stats. However, even if I take only user-stats, the statistics vary a lot ...
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268 views

Using VNC client to access local QEMU VM

I have installed Debian in a QEMU VM and am currently using the default QEMU Manager as the main display, since QEMU allows VNC as the main display. I have a VNC client installed on my PC; can I view ...
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2answers
485 views

Drive not recognized by linux when launched from qemu

I'm attempting to boot a linux kernel, ramdisk, and a drive using qemu: qemu -initrd ramdisk.cpio.gz -kernel mylinux.i686 -m 1024 -append console=ttyS0,38400 -serial file:serial.out -hdd raw.img ...
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367 views

Make a bootable cd from a floppy

I have followed this tutorial http://wiki.osdev.org/Bare_bones to build a simple C kernel and boot it successfully. But, how to convert the floppy image to CD image to use it with my real PC?
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434 views

Trying to run QEMU with a file as hda

I'm trying to run QEMU and use a simple file on the host system as the guest's hard drive. Here's what I attempted so far: $ dd if=/dev/zero of=/home/felix/vm/archlinux.img bs=1MB count=8192 8192+0 ...
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64 bit guest on a 32 bit host

I've been searching around here but didn't found a proper answer. I have problems to start a 64bit (ubuntu-amd64) guest system on a 32bit ubuntu host, using qemu. I've made sure that the kvm kernel ...
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4k views

Error while creating a VM using KVM

I am trying to set up a VM on my Ubuntu 13.04 Desktop and it's giving me error when I try to start the VM. The error states: virsh # start vm1 error: Failed to start domain vm1 error: internal error ...
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968 views

How to set up virtual windows so it shares graphic card via IOMMU?

I'd like to continue using Linux as my desktop system. But from time to time I'd like to do some gaming. I know that I can use Wine and PlayOnLinux stuff, but it doesn't always work. I also know, that ...
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62 views

How do I define a new virtual machine in QEMU?

I have installed QEMU for fedora via: yum install qemu Now how do I start it ? I mean how do I define a new virtual machine, like I do in VMware? Also I don't see any icon made for QEMU.
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158 views

Why is [ssh,scp,rsync,etc] so slow, from a VM to another local machine on my gigabit local network?

I have a VM A running the latest archlinux with QEMU, KVM and a Virtio network card. It is a buildbot and it needs to drop the result on another machine B on the local network. The VM is started with ...
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1answer
43 views

QEMU outside gateway

I've created two instances of CentOS6.5 (KVM) using Virtual Manager and I'm able to ping google.com, yahoo.com,etc... However the ip addresses for the instances are 192.168.0.* and the machine that ...
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579 views

Running virtual linux using qemu on windows

I am trying to use Qemu 1.3 for windows to run lubuntu on a USB stick with Windows 7. After downloading and unpacking Qemu on my usb stick, if I click on qemu.io.exe, I get qemu-io.exe> How do I ...
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352 views

Reducing hard disk access of kvm

I have set up a kvm/qemu virtual machine on my home server (Ubuntu Server 12.04). My host system is installed on a small SSD but the image for the vm (virtual disk file) is saved on a classic HDD. ...
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152 views

Running os x app on linux using qemu

I would like to run a small app (TrunkDecrypt) on my Linux box. Unfortunately the app is compiled for Mac OS X, but I am only running linux. I have read somewhere that qemu supports executing code ...
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Compiling QEMU on Mac OS X Lion

I've been having trouble compiling a working copy of QEMU on Lion. When I try installing through homebrew, I get a screen like this when I attempt to run QEMU: The blank screen just sits there ...
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711 views

What could cause a video to play poorly in VLC?

I am playing a high quality (1080p) video using VLC inside a qemu-kvm virtual machine. The OS on my virtual machine is gentoo and the host OS is Ubuntu. The video experience is very jerky : the video ...
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qemu-i386 on ARM processor giving ld-linux.so.2 error

I am trying to install Ventrilo server on my SheevaPlug, running Debian ARMEL. Since Ventrilo server is an x86 program, I would like to try and use qemu-i386 to run the server on my ARM processor. ...
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476 views

Why can't Windows 7 see my virtual storage devices in KVM?

I'm trying to install Windows 7 inside of kvm on Ubuntu 10.04. Previously I've installed guest Windows XP and guest Ubuntu without incident. However, when I tried to install Windows 7, this happened: ...
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2k views

How to boot dd image in QEMU?

I created an image of my Debian Squeeze running on a Sheevaplug using dd if=/dev/sda of=plug_SD-karte.img (sda is the SD card plugged into another computer). Now I want to emulate the Sheevaplug. I ...
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How can I have different ip address on qemu vm with wireless host machine?

Because wireless doesn't support network bridge, I can't use bridged networking like virtualbox do. I'm running on arch linux with NetworkManager managing connection. Almost every possible way that I ...
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10 views

How to setup Windows 7 in Qemu on MAC?

I've installed quemu using homebrew . But in application folder there is no Qemu app. What to do? Im on osx Maverick.
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QEMU guest system starts off /dev/sdc but won’t start from disk image file

I have a copy of Windows XP installed on a hard drive which I would like to run with QEMU. When I start it directly from the HDD it runs fine: qemu -m 256 -hda /dev/sdc Starting ...
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1answer
17 views

Mount or extract data from LVM partiiton inside of a RAW IMG File?

I have a raw disk .img file (running file indicates that it is a "DOS/MBR boot sector" file). Running mmls produces the following output: DOS Partition Table Offset Sector: 0 Units are in 512-byte ...
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Unfortunately Blueetooth Share Stopped when setting AndroidX86 with Qemu

I am trying to run AdnroidX86 on Qemu Linux x64. Everything works, installation went fine but I keep getting the error abovre constantly which limits my interaction with the the virtual device because ...
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12 views

How to enable bluetooth in Qemu? -Bt option throws and error

I am trying to enable bluetooth with Qemu when running an image (AndroidX86) but I am getting an error. According to the document I can just use the "-bt" switch but that is not recognized by the ...
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30 views

Qemu mouse movement speed

Is there a way to increase the mouse movement speed in qemu? Currently, the mouse in the guest OS is horrible slow even when max speed is set in guest OS. This is the QEMU startup command: ...
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23 views

Can we say that QEMU is a Virtual Machine?

What I perceive as a Virtual Machine is that it simply allows to load another Operating System side-by-side on its own sandboxed environment. It is limited to the same hardware architecture as the ...
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83 views

Control fan speed under linux without nvidia drivers

I have quemu-kvm configuration like this - IGP on host (linux) and Nvidia on guest (windows). I blacklist nvidia drivers under linux (arch dist.). Is there a way to set GPU fan speed under linux ...
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47 views

No outgoing traffic through passthrough network adapter (NIC ) on KVM guest

I have KVM host operated under CentOS 7 and guest with Windows 7 on it. Host NIC is passed to the guest as PCI device passthrough (not bridge, not NAT). Guest detects the NIC (drivers, cable plug, ...
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24 views

VirtualBox on QEMU host?

I have remote access to a QEMU Windows Server 2012 (64 bit) VM with 12 cores @ 2.8 GHz ("QEMU Virtual CPU version 2.0.0") and 48 GB RAM. For a project I wanted to set up a Linux VM on VirtualBox on ...
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54 views

How can I emulate Windows Server 2008 R2 with QEMU? / Cannot virtualize Win2K8 R2 using QEMU on Windows Host

I have used precompiled QEMU 2.2.0 (64-bit version) to emulate a PC running Windows Server 2008 R2. The Host OS is Windows 8.1 Enterprise 64-bit, and my CPU doesn't support Intel VT-x so I can't use ...
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qemu ARM: Unsupported syscall: 983040

I'm trying to run a ARM32 binary within qemu but I get seg fault: root@debian:~/squashfs-root# chroot . ./qemu-arm bin/xxx qemu: Unsupported syscall: 983040 qemu: Unsupported syscall: 983040 qemu: ...
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How to emulate pentium 4 with qemu?

Does anyone know if QEMU emulates pentium 4? It isn't in the list specifically, but i don't know about some of the listed architectures. qemu -cpu ? x86 [n270] x86 ...