We are actually in the process of converting a client's cluster from ESXi to AHV.
Some of the VMs OSes (Windows 2003, 2008 x86) aren't supported by NGT and can't be converted, we are planning moving them outside the cluster, converting it then migrating them back to AHV.
We are doing some test with a CE cluster and migrating some Windows 2003 and Windows 2008 to it just to be sure before doing the real conversion.
So far, I was able to migrate a Windows 2008 without any problem by first installing the Fedora VirtIO. After doing a storage vmotion to the AHV cluster then creating a new vm using the vmdk from the original VM, the VM booted fine and detected the new hardware device.
Doing the same on Windows 2003 didn't yield the same result. I tried different methods as described here (and clearly indicate that this is possible):
But I am getting the same result everytime, the VM refuse to boot with a "Error loading operating system", probably due to the fact that the right drivers aren't loaded in the OS but I just can't find the right drivers or the right combination.
The test VM is a Windows 2003R2 x86 with all the latest updates possible from Microsoft.
Any ideas what might be wrong?