I'm trying to install a guest VM using KVM on a partition. I use virt-install. I call the following command:

virt-install -n centos --ram=1536 --vcpus=1 --cdrom=/var/lib/libvirt/CentOS-6.5-x86_64-minimal.iso --disk /dev/mapper/vg_vmhost-lv_centos

The VM boots up to install - the Welcome to CentOS 6.5! screen with the five options to install or upgrade, install with basic video drive, rescue, boot from local drive, or do a memory test shows up. Then the following messages display:

Loading vmlinuz
Probing EDD (edd=off to disable)... ok...............ready.
kvm: 2617: cpu0 unhandled rdmsr: 0xc0010001

And then it hangs without installing CentOS.

I've searched for this error and the pages I've read haven't been helpful at all. This one, for example, indicates that the messages are harmless.

My host machine is a headless CentOS 6.5 minimal install, and I'm trying to install the same on the intended VM.

1 Answer 1


If you are attempting to view the installation using virsh console, you need to configure the guest to output to the virtual serial console. From the boot screen you can press "Esc" which will bring up a prompt to provide additional boot options. Enter the following:

linux console=ttyS0,115200 utf8

This will start the text-mode installation over the virtual serial console. Another option is to use libvirt's VNC to perform the guest installation. To do this on a headless server, you can use X11 forwarding:

ssh -X yourhost

From the virt-manager GUI you can open a VNC connection (default) to the guest OS.

RHEL6 Administration Guide: Troubleshooting with serial consoles
RHEL6 Installation Guide: Additional Boot Options

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