On 06/07/2011 13:03, Steve Campbell wrote: > I'm still trying to get xen working before Centos 6 and KVM just for > experience. I seem to be able to do most of what I what with VMs, but > I've run into another problem with CD/DVDs. > > I can get a DVD mounted on the host domain just fine, but when I try and > attach-block to a running guest VM, the entire server reboots. I've > tried many different commands versions based on what Google finds, but > I'm not getting anywhere. I end up using scp to copy the data from the > host to the guest. > > The guest is basically defined as a full virtualized domain. I'm using > /dev/scd0 as the device (it's listed on the mount command) as both > frontend and backend devices. And I've tried a few other devices as > well, but the same result. This should be easy. Use attach-disk, not attach-block. Unmount on the host before mounting on the domU. See the attach-disk commands in my reply to one of your other mails. The device is /dev/sr0 on SL6. Give it a go, and post your exact commands. BTW, I gave up waiting for Centos-6 long ago. SL6 works just fine with KVM. Haven't tried Xen on it yet - my Xen domains are on F8.