I'm trying to create a VM with a qcow2 or img file as the HDD. I tried the following prlctl create coreos -o linux --no-hdd Creating the virtual machine... Generate the VM configuration for centos. Remove the hdd0 device. prlctl set coreos --device-add hdd --image coreos1.qcow2 The folder /root/coreos1.qcow2 does not exist. Specify another folder and try again. Creating hdd0 (+) scsi:0 image='/root/coreos1.qcow2' type='expanded' 65536Mb subtype=virtio-scsi PrlVmDev_CreateImage: The hard disk image file cannot be created. The virtual hard disk image file named /root/coreos1.qcow2 already exists. Failed to configure the virtual machine Is there some trick to this that needs documenting?