Hi , I am performing a migration of Windows 10 VM running on HyperV to OpenStack setup with Ussuri(qemu KVM) on Debian 10 nodes. I got the Windows VM exported disks as disk1.VHDX and disk2.avhdx files from my WIndows cloud Vendor. 1. As my understanding I need to convert these VM disks from HyperV using virt-v2v tool. ( Could someone explain what is the relevance of this step and is it mandatory for importing it to my Ussuri Openstack cloud which uses qemu-kvm hypervisor. 2. As I've read I tried to convert this disk1.VHDX file with the follwoing step #virt-v2v -i disk disk1.VHDX -o local -os /home/cloud this step fails with virt-v2v error : // Files system was mounted read only . even though we sked for it to be mounted read-write. This usually means that file system was not cleanly unmounted. Possible causes include trying to convert a guest which is running. or use Windows hibernation or Fast Restart . Original error message touch: open /8imepyi7: Read only file system ... Can anyone guide what causes this error and Is there a fix or work around available to solve this error in vrit-v2v conversion ? Thanks in advance krish