Hi, sounds strange. Basically a dd should be enough to clone the machine. I guess the hardware-model that gets through to the Windows-VM changes when the Kernel-Achitecture changes. So basically you swapped a 32-bit mainboard with a 64-bit mainboard - as far as VM is concerned. So I guess you have to "reapair" your Windows with some kind of Windows-rescue-mode. Which Windows is it? With XP I had some success with booting from an install-media and then going to "repair existing" after the install-process has detected the already installed partition. Afterwards all XP-patches had to be re-applied - though. But all installed applications were still there. You'd better try that procedure with cloned data... Kind regards Nils > -----Original Message----- > From: centos-virt-bounces at centos.org > [mailto:centos-virt-bounces at centos.org] On Behalf Of James Roman > Sent: Thursday, July 30, 2009 3:24 PM > To: Discussion about the virtualization on CentOS > Subject: [CentOS-virt] Migrate windows VM from i386 Host to > x86_64 host > > Somehow one of our Xen servers ended up loaded with the i686 > xen kernel, instead of the x86_64. The host has one windows > VM running on it. The OS partition is file-based, but it also > has a logical volume partition assigned for data. We would > like to migrate the host server to a 64-bit kernel, which > means moving the VM to one of our other 64-bit host servers. > We tried simply copying the OS partition and using dd to move > the LVM partition to a new host unsuccessfully. I'm pretty > sure that dd may not be appropriate when moving between > kernel architectures. > However, even without the LVM partition specified in the vm > config file, we are unable to boot the windows system. It > looks like it is blue screening immediately, since we never > get a console connection. Are there any instructions anywhere > for moving VMs from one host architecture to another? > > Current Host: > Centos 5.3 i686 kernel 2.6.18-128.2.1.el5 Xen 3.0.3-80.el5_3.3 > > Destination Host: > Centos 5.3 x86_64 kernel 2.6.18-128.2.1.el5 Xen 3.0.3-80.el5_3.3 > > > > _______________________________________________ > CentOS-virt mailing list > CentOS-virt at centos.org > http://lists.centos.org/mailman/listinfo/centos-virt >