How to migrate a Windows Server from AWS EC2 or Xen to KVM

Download KVM Fedora driver
Replace the Citrix SCSI driver by Fedora one

Add the following legacy devices :
VirIO Baloon
NetKVM

If on Xen, export the volume like this :

[root@xen ~]# xe vdi-list  name-label=windows
uuid ( RO)                : 0db82c11-6ea3-4e7a-bcf5-a75470968200
          name-label ( RW): omnitrack
    name-description ( RW): Created by XenCenter Disk Image Import
             sr-uuid ( RO): e5772b34-5ad1-6ac9-f91d-575dbec3aea6
        virtual-size ( RO): 32212254720
            sharable ( RO): false
           read-only ( RO): false


[root@xenr13sm6d ~]# xe vdi-export uuid=0db82c11-6ea3-4e7a-bcf5-a75470968200 filename=/var/run/sr-mount/6ad66e9d-f3dd-845e-e783-5077cb157a13/widnows.raw format=raw progress=true
[|] ######################################################> (100% ETA 00:00:00)
Total time: 00:07:11

Easily install updates on Xen Server (free version)

You are using the free version of XenServer and you would like to apply updates automatically?

Review the patch you want to install and write down their numbers :

Now connect to your XenServer using SSH
Create a shell script file and make it executable :
touch xsupdate.sh
chmod +x xsupdate.sh
vi xsupdate.sh

Press i and paste the following content :